We haven’t had the best experience with MailChimp. It didn’t have the customization we needed, and it doesn’t always end up in users' inboxes (vs promotions or updates folders).
Founder & CEO - SquarePeg
MailChimp comes into play a little because we capture emails from people who subscribe to the blog.
Founder - Better Proposals
We sort of stopped doing the bulk of our email marketing through MailChimp because it makes more sense for our business to do it through Intercom, but we still use MailChimp for the odd auto-responder. MailChimp is great for simplistic email marketing or linear auto responders but it’s a lot of effort to get product usage information into MailChimp so for that we use Intercom’s Engage product.
Founder - Better Proposals
It does the job for us. We’re able to put our signup form online and track who has signed up.
Co-founder & CTO - Factmata
We use MailChimp for our company newsletters.
Founder - Student Maid
We use MailChimp more for our newsletter.
Founder & CEO - ChartMogul
MailChimp is nothing special really and it seems a little expensive sometimes, but overall, it gets the job done.
Founder & CEO - Fruit Street
We use MailChimp for our newsletters.
Founder & CEO - SendBird
We’re really gung-ho about MailChimp. I’ve loved watching it grow and have been using it since 2010. I’ve been surprised and delighted with the feature set which has a lot of value out of automation and integrates well with event tracking and other systems.
Co-founder & Chief Product Officer - Clark
We like it a lot. We like the integration with GIPHY. We tried Drip for awhile but chose MailChimp because we wanted a more visual newsletter. Drip doesn’t have an HTML editor.
President & CEO - Billy
MailChimp is simple and integrated with Pipedrive, our CRM. It is also integrated into our website which helps create a workflow. It also integrates with our own software, SalesWings.
Co-founder & CEO - SalesWings
I like MailChimp's analytics. MailChimp is cheap, easy to use, and makes your emails look really professional for a small startup.
Co-founder & CEO - WeFind
I really like the unsubscribe feature from both MailChimp and Reply.io. You don’t want to spam people.
Co-founder & CEO - MuseFind
We use MailChimp for consumer marketing stuff and SendGrid for our notifications and admin. We are using SendGrid because it was the best backend mail server to use for all our notifications to send to our customers, while MailChimp is more for marketing and drip campaigns. MailChimp is super pretty and easy to use.
Founder & CEO - iFundWomen
MailChimp has a lot of great integrations and it’s affordable. The automation has been great for us--I use it for a range of projects and companies and suggest it to a range of clients.
Founder & CEO - FoodTrace
MailChimp is also great, but we do not send out many newsletters.
Anne de Vries
Founder - Tubbber
MailChimp gets expensive when you start to have a certain amount of subscribers.
Head of Platform - WaystoCap
MailChimp is our marketing list, where we can send out newsletters to all our subscribers. We have no issues with it--it’s a great product. For our existing customers, we go through Intercom because it is better for segmentation.
Founder & CEO - Travefy
We use MailChimp for newsletters.
Founder - FastPortal
MailChimp is a common tool if you have a big email database. But we are thinking of moving to ActiveCampaign to be able to make more personalized campaigns.
Founder - Favoroute
We use MailChimp for ongoing newsletters. This also includes an investor's newsletter that goes out every month.
Co-founder - Flexpat
We are using MailChimp but I don’t love them. I prefer Constant Contact, but the team member that is responsible for this knew MailChimp better. MailChimp customer service sucks, while if you ask Constant Contact how to bake a cookie they will try to walk you through it.
Kate Bradley Chernis
Co-founder & CEO - Lately
We originally were using MailChimp until their fees for the size of our subscriber database got too high--Intercom were charging less for the same thing. Intercom has evolved and added customer support features, and we’re using that now too which is great. They’re not so cheap any more though :)
Founder & CEO - Fluid UI
We used MailChimp in the past, but Autopilot has more features and functionalities. It’s like a combo between MailChimp and Marketo, and has much more sophisticated scoring features. Autopilot does also physical mail and text messaging.
Co-founder & CEO - Frame.io
MailChimp is great at tracking the impact of your marketing efforts.
Co-founder & CEO - Amper Music
I like MailChimp. We send out monthly newsletters, and our intern who just joined us was able to put together 90% of a newsletter, even though she had never used it before. Also, it allows you to track performance and has a heatmap of how people use the email.
Co-founder & President - JustFix
MailChimp has added a drip feature that allows for better emails sequencing.
Founder & CEO - Re-Nuble
Founder & CEO - Open Collective
MailChimp is okay. Most of those email marketing tools do pretty much the same thing. We started with MailChimp and we already have transactions on there so we’re sticking with them.
Founder & CEO - API Fortress
We are using MailChimp through Squarespace. Even though it is a fine tool, we would like to have a more direct connection with our customers. MailChimp has a partnership with Squarespace, but our customers still have to go through an intermediary step where the email appears to be going through MailChimp. They should get rid of that.
Co-founder & CEO - WearWorks
MailChimp is not as powerful of an interface, but the UI is a lot more intuitive than HubSpot and has great templating features.
VP of Technology - Gust
We use MailChimp to send out invites to our software. Some spam tools will automatically send invite emails to spam. It still happens with most of the tools out there; if you really don't want that to happen you have to implement your own email server.
Co-founder & CEO - StrongDM
MailChimp is really good to create newsletters even though I have not been using it a lot. We can aggregate potential users and customers in groups and send out specific emails. I use it to send out monthly updates. We are on the free tier.
Founder & CEO - Bonbouton
We are using MailChimp at the moment, but as we grow we might move on to something else. We enjoy Campaign Monitor as we are very design-focused, and the platform provides more opportunities to customize email and brand content to align with our design point-of-view.
Co-founder & CEO - Olika
We use MailChimp for newsletters. The pros are that the interface is very nice, they have good analytics on the emails and it is easy for the receiver to subscribe and unsubscribe. The con is that it is not customizable from a developer standpoint.
Co-founder & CEO - Smiletime
We’re using MailChimp right now for our newsletters, but we’re building and looking into more comprehensive marketing automation platforms. We’re also evaluating different email marketing tools like Customer.io, Marketo, and HubSpot.
Founder & CEO - CoverWallet
MailChimp is good, has a pretty good interface and is super intuitive.
CEO - Fuel
MailChimp is great, but if you want very robust templating features you sometimes need a developer to do that work. It has very good integrations and a lot of functionalities: AB testing, email automation and personalization. They should do a better job of pointing out some of the more advanced features. You really have to look for them, otherwise you might not even see that they are there.
COO - Wearable X
MailChimp does the job--we haven’t really tried other tools. It works well in the retail sales arena, but is not a key tool for us, like for example our consumer CRM.
Founder & CEO - Glass-U
I think that the more successful an email marketing tool is, the more it gets targeted. Gmail and other mail services are very careful and sometimes they block emails sent out from tools like MailChimp. Overall, though, it works pretty well.
Founder & CEO - Current
We’ve been in the ESP business for a long time, and MailChimp has always had a clean interface. And they innovate! Some ESPs go stale, which gets annoying when they have the same platform for three years. We’ve been happy using MailChimp.
Co-founder - NiftyImages
I am not the person using MailChimp, but it seems really good.
Co-founder & CTO - Moving Analytics
So far so good with MailChimp, but we have a series of in-house tools designed to integrate it.
Co-founder & CEO - Mavatar
We use MailChimp to send out newsletters.
Co-founder & CTO - Price f(x)
MailChimp is very cheap when you get started, but for us it is getting pricey. The template manager is great. It is responsive and has easy tools to do A/B testing. We are pretty happy with it. The user-facing side is quite great; the limits are on the developer side--if you want to do advanced integrations, it becomes really hard.
Co-founder & CTO - Tailor Brands
We really like MailChimp. It is nice that the subscription level grows with your subscriber list; it works really well for us.
CEO - HackerYou
MailChimp is fantastic--it integrates with many of our other tools to help us better communicate with our students, candidates and company partners with compelling content tailored to their needs.
VP of Market Expansion - LaunchCode
In full transparency, we use and are sponsored by Campaign Monitor and MailChimp. The good thing about working with both of them is that we get behind the door scenes of what they're developing. We get to beta test for them and try out new tools they’re launching. MailChimp launched a recommendation engine and a few other tools that are better from other stuff we’ve seen in the market.
Co-founder and Business Development - Really Good Emails
MailChimp is OK. It is good because a lot of people know how to use it, but it is not so advanced in terms of email automation.
Product Marketing Director - Nugit
MailChimp is an excellent tool. It is very easy to use and provides us with useful information like bounce and open rates.
Co-founder & CEO - Proximi.io
MailChimp is nice.
Founder & CEO - Nanit
MailChimp is pretty fantastic--it works really well for drip campaigns and newsletters.
CEO & Co-founder - Moringa School
We use MailChimp as it is easy to use and embed in our website.
Co-founder & CEO - Breeze
We focus on MailChimp. It is easy to use and has worked well for us. We are able to send out targeted email campaigns.
CEO & Founder - Direct Cannabis
We use MailChimp for community newsletters, and other communications that are not triggered by an event. It’s so simple and easy-to-use that even our designer who has no knowledge of HTML can create newsletters. But I feel the pricing has gotten really high as our mailing list has grown.
Founder - SnapEDA
MailChimp is a little too expensive for our taste, but it offers good functionality.
Founder & CEO - Sponsoo
MailChimp is a great system, the design is wonderful and the software application makes it very easy to build great newsletters.
Founder - Lord Jameson Dog Patisserie
MailChimp is the email marketing tool we use the most. We are used to it.
Founder & CEO - Cheekd
We use MailChimp for marketing emails.
Co-founder & CEO - Moesif
MailChimp is completely the industry standard to be honest. We’ve been using it for years and everyone around us uses it. Before when we all worked in a web agency, we used our own email software. When we moved to MailChimp about 5 years ago, we were so happy because it was way better than what we had. I haven’t tried Campaign Monitor or other solutions because MailChimp does the job perfectly well.
Co-founder & Product Manager - MailClark
We use MailChimp for reaching out potential customers.
CEO & Co-founder - Pyze
We use MailChimp to shoot out marketing emails. It works fine.
Co-founder & CTO - Teem
We use MailChimp to communicate with third parties to announce new features to our products or other important corporate news.
CEO - Jack Media
MailChimp is good--we integrated it with Wufoo. The segmentation of the emails is a little challenging.
Founder - Nicely Noted
With MailChimp, we take care of newsletters and product updates. We use Zapier to hook all the new sign-ups to it. It works well, but the only downside is that if you scale up, the price goes up.
Co-founder & CEO - Recruitee
MailChimp is the premium mailing tool that we use now.
Co-founder & CEO - Roadmunk
MailChimp pricing is by list size and not email frequency, so we have to load and unload different lists after sending an email. It’s a bummer that MailChimp has ridiculous month to month fees for having an enormous list. MailChimp is reliable and fun to use, but it ends up costing a lot for a one-time message.
Co-founder & CEO - UCIC
MailChimp is the industry standard--it’s de facto. I think it’s okay; the UI could be a little bit better. It’s tough to get the right analytics but it integrates with everything.
Founder & CEO - Sproutling
We use MailChimp for our mass mailouts like newsletters. For the purpose, MailChimp is certainly our favorite pick. It is very easy for non-technical users to setup (i.e. our business and marketing unit) and its analytics are well designed and implemented.
Co-founder & CEO - Qwilr
We’ve used many email marketing tools over the years, such as Constant Contact. We really like the MailChimp branding and found it much easier to use. They also have Marketing Automation tools now. We also use Mandrill to do transactional emails. MailChimp has many different plugins for various purposes.
Co-founder - ComicReply
Lower pricing is always better, but many factors fall into the decision of what tools you are using. Until now, the pricing aspect of MailChimp hasn’t prevailed.
Founder & CEO - Qardio
We use MailChimp for all of our campaigns and connect it through Mandrill for our transactional emails that are connected through our app.
Founder - BabyBin
We use MailChimp for tracking inbound leads from our website and for all our shareholder communications.
COO - Aquarius Cannabis
MailChimp is a great tool for marketing, but it does not do transactional emails. The visual editor is very good and that allows the marketing people to build the campaigns themselves.
Co-founder & CEO - TravelPerk
We use MailChimp for our list-based email campaigns.
CMO - TaskEasy
We use MailChimp to send emails to prospective customers. It does what it needs to do. It is an industry standard.
Marketing Director - FreshGrade
We have used MailChimp in the past but we are switching to Marketo. Marketo replaces a lot of different products we are using. Marketo has a lot of bells and whistles--it does landing pages, A/B testing, everything a software suite needs to do. It’s a really cool product.
CEO - ReviewTrackers
We use MailChimp for email marketing and content marketing. Email marketing is designed to drive a conversion. Content marketing is designed to drive an interaction. The content is in different contexts. While utilized the same way, the messaging is completely different.
Founder - Magical Butter
MailChimp is a wonderful product. It’s great and flexible.
Founder - Magical Butter
MailChimp is really awesome. I love how they came out with an automated funneling system within the past year. Having had experience with Infusionsoft, the automation is a huge pro for MailChimp. MailChimp does an awesome job with their free tier and can scale with your company.
Co-founder - Beau
We moved from Mad Mimi to MailChimp. It’s pretty powerful, user friendly and affordable as well. We are in the process of moving from MailChimp to SimplerSES. I have been talking to their founder to figure out our needs. We are moving to this from MailChimp because SimplerSES integrates with AmazonSES and is pay as you go. MailChimp also has a pay-as-you-go plan, but SimplerSES is cheaper than MailChimp. SimplerSES expos API, so we can subscribe users at the time of sign up.
Founder & Chief Instructor - iLoveCoding
We use MailChimp for release announcements for our enterprise version. It is simple to use and easy to manage.
Founder - Waffle
MailChimp templating is very easy.
Co-founder - Simple Fractal
We use MailChimp for transactional emails that tell our customers/drivers about how things are going and how they are doing. We send messages to them about how their week has been, whether they’ve improved or not, and set goals for the next week. Because we are building a B2B business we don’t end up using a lot of marketing tools. We don’t do marketing campaigns by acquiring users on Facebook or Google. We get inbound leads that we curate with our business development team.
Co-founder & VP Data - Zendrive
We love both MailChimp and Mixpanel. They are on the expensive side, but they bring a ton of value. We use MailChimp twice a month for our large list. MailChimp is great for sending newsletters to a lot of people. We would have to build functionality in house to replace what they do.
Co-founder & CEO - Webflow
I love MailChimp, it’s fantastic! Because we are a B2B company, we just use it for plain text email, but I recommend it to everyone as a tool for SMBs--especially to e-commerce stores. MailChimp integrates really well with e-commerce. It’s also great because you can do optimized timing sends based on a person’s location.
Founder & CEO - Pixc
I believe that right now MailChimp is the one tool that does everything right. It has a great interface; they recognize how new entrepreneurs run a company. After every call that we take, we send an email summary. Mandrill helps us analyze how many emails are being sent and keeps us updated if anything happens, like if the server is down.
Founder - Vicky Virtual
MailChimp is great and easy to use. We like how it integrates with Unbounce.
Co-founder - Matchnode
It’s amazing how fast we were able to pick up and use MailChimp from day 1, and it’s integrated easily with every other tool we’ve used (Shopify, Unbounce, Zapier, etc.). Most importantly, we were able to start with the completely free version, use it to grow our list, and then upgrade when it was time. The only complaint we have is that it’s almost too powerful — too often we struggle to know where to find the specific setting for what we’re looking for, or get bogged down trying to distinguish between different ways of separating people. They could make that part better, but overall, we’re happy to be using it and happy we invested the time to understand the full potential of the app.
Founder - Bamboo Supply
We are processing marketing emails with MailChimp. We are thinking of moving away from it though, as there is too much maintenance involved.
Co-founder & CTO - MineWhat
For emails that we send on occasion (like sales, promotions, etc.), we use MailChimp.
Founder - Companion Maids
We use MailChimp to send out our newsletters. I love it. We are still under the free umbrella. It is really easy to use and lets you build a good newsletter even if you do not have much time to dedicate to it.
Founder - GrandBox
I like MailChimp. It’s very straightforward for email marketing. They have a good UX and it is easy to onboard.
Co-founder & CEO - Process Street
We chose MailChimp because it was simple and we have it integrated with our CRM--so those were key drivers. We may stay with it, but we’ve heard from other people that use Marketo that they like it, so we may look into Marketo.
Co-founder & CEO - Limelight Health
We are satisfied with MailChimp. The simple tools and tracking help engage our most important customers in different geographies. But, I feel it is a bit pricey for what you get.
Co-founder & CEO - BottlesTonight
We use MailChimp for our blasts. It’s been a pain to get it synced up with our user database and unsubscribe database. We only use this for one-off emails, not for anything that gets sent out regularly.
Co-founder & CTO - Beyond Pricing
We use MailChimp when we have product launches and announcements to our user base.
Co-founder & CEO - Lob
This is how we manage our emails to users and administrators. I’ve found it to be a solid service. I’ve used MailChimp for 6 or 7 years now and it’s been the de facto standard for me. It works well and it has good reporting. It lets me know how many emails get out there, which got delivered and how the last campaign performed so I can do better next time.
Co-founder & CEO - Payable
We do a lot of integrations with Salesforce, and MailChimp is one of them.
President - MU/DAI
We are still on the free version of MailChimp. We are very pleased with it.
COO - Higher Ed Growth
We use MailChimp for our marketing email lists.
Co-founder & CEO - DocSend
We like MailChimp. We started using it a year ago and we’re pleased so far. We have a monthly newsletter that goes out. It’s super easy. You can figure out how to maneuver around the site really easily. The analytics and tracking are awesome. It’s great being able to track clicks and open rates compared to industry standards.
Founder & CEO - PeopleFoundry
We were heavy on MailChimp, but it got really expensive for us. So we switched to Mandrill and created our own custom solution that let us send a ton of newsletters using Mandrill. The recent merge changes things from the payment side--it’s not a welcome change. I wish there was more of a warning with what they were trying to do. But it’s fine. It didn’t break any of its services.
Co-founder & CEO - Mammoth
We manage newsletters with MailChimp - it’s great. We use Autopilot for marketing animations. Both of these tools are very easy to use but extremely powerful.
Founder & CEO - Instapage
We use MailChimp for our newsletter. MailChimp’s interface is so simple--I love it. But, I wish I could sequence emails, so I could send 3 sequences based on whether they open an email or not.
Founder & CEO - Kahoots App
For me, the key to a good application is simplicity. It does not need to have an incredible amount of features, as you can get lost and annoyed. MailChimp has a clean UI; it’s transparent and easy to use. With MailChimp, we can automate our blog posts, which is very useful as we have over 50,000 people on our email list. The security features are also great. In addition to MailChimp, we use Postmark as it helps us with tracking email performance and with troubleshooting.
Founder & CEO - MySiteAuditor
We don’t love the MailChimp interface, and we were sad to see Mandrill (which we liked using) merge their product given that they service fundamentally different needs. It’s clearly an attempt to get customers from one service to another without thinking of the needs of the customers that use the two different services. MailChimp’s pricing model isn't too great either.
Co-founder & CEO - Stylisted
MailChimp is great; it is easy to sign up, segment, and send email with it.
Founder - Engine
With MailChimp you can create very beautiful emails easily and quickly. Everyone on our team can work with it pretty easily. Unfortunately, the price we pay is really high because we have about 200,000 developers that we want to keep in the loop.
Founder & CEO - AppGyver
MailChimp is good, useful, and easy to use.
Co-founder - Sorc'd
Early on, with our small marketing team, we relied on MailChimp for easy to create marketing emails that didn’t burn up too many design or marketing resources. MailChimp is the perfect first email platform for an early company.
Co-founder & CEO - Opternative
We started with MailChimp when we first started our company because we knew building an email list was important from the get-go. We picked MailChimp because it was free to start, already had a great reputation, and the interface and function were awesome. When you are bootstrap, cost is always a concern, and their free-to-start model worked like a charm. We’re now paying more as our list grows larger. We don’t have complex mailing needs, but Mailchimp has never let us down.
Founder & CEO - iPyxel Creations
We used to use Constant Contact and MailChimp. Now we use ExpressPigeon and they’re the best for email marketing. They have the best customer service. Constant Contact had good customer service, but we grew too big for them. ExpressPigeon can handle the amount of emails we send out and is cheaper than MailChimp. MailChimp also has horrible customer service, and was around $50 more than ExpressPigeon.
Founder & CEO - PaletteApp
We’ve always used MailChimp to send out our blog posts and manage email campaigns, and newsletters to send to our customers. We may switch to Agile entirely soon, though.
Co-founder & CEO - Careerleaf
This stack is reliable and affordable.
Founder - PeachDish
MailChimp is great. It has a good API as well as a great UI interface that makes it simple to create emails even without technical knowledge. It is also very reliable; we have never had an issue with them.
COO - Reverb.com
If not MailChimp, what else would you use?
Founder & CEO - Nomiku
We use MailChimp for our newsletter. It’s super easy to use and we like that. We can use it with Zapier to push things into MailChimp and make different lists. It's very integrative with other tools. I’m not a fan of the double opt-in, and unless you really know what you’re doing, you can miss some of the more advanced settings.
Co-founder & CEO - Impact Health
We use MailChimp for our product announcements and newsletters. The MailChimp API allows us to keep our MailChimp lists in sync with our users’ email preferences. Our newsletter delivery and open rates are solid, although the MailChimp HTML email boilerplate doesn’t work well with the Gmail Mobile app.
Co-founder & CEO - Nitrous
Because we are a marketing agency, our use of email marketing is primarily from a client perspective. For smaller clients, we use MailChimp, integrated with a CRM like Salesforce. This typically requires close management, but is great for periodic campaigns such as newsletters.
Founder - Neumarkets
MailChimp is used for our weekly emails to our customer base. It’s flexible, its segmentation is great, and it lets us do what we want. One of the qualities we don’t love is not being able to delete lists for 7 days. But it does what we need, since we don't use it for robust analytics.
Co-founder & CEO - Doughbies
We have mailing lists on MailChimp, but we’re less trusting of them now because of how they’re closing down Mandrill. But we have not made a move off it yet.
CTO - Expa
We’ve been happy with MailChimp. It integrates well with our surveys and ebooks. I love the integrations, and the price point.
Co-founder & CEO - PowerToFly
MailChimp has worked out pretty well for us.
Founder & CEO - Gigwell
MailChimp is a great service for segmenting emailing lists, but there is a significant learning curve with it. Understanding when to use segments vs groups is a little difficult. That said, MailChimp is a very powerful tool, and recently they’ve enhanced their design functionality significantly.
Founder & CEO - Whim
For our bi-weekly marketing emails, we use MailChimp. The ability to set it up quickly and its straightforward API integration make us a happy client. Now, we’re pushing for more customized HTML in outgoing emails. As our client base grows and we begin different marketing strategies we might need features beyond what MailChimp can do for us, but for right now it’s great.
Co-founder & CEO - LeafLink
We use MailChimp for our email marketing to customers.
Co-founder - Bauxy
We’re using MailChimp and have seamlessly imported a few thousand contacts this week. I’ve taken some of their tutorials online and it seems like I’ll be able to design my own templates. MailChimp looks clean and easy to use.
Co-founder - ElectroSpin University
We use MailChimp. I’ve found that it’s a little expensive, but other than price, I think it’s great.
Co-founder - Bubble
I like MailChimp. It was a little complicated to get into initially, but once you’re familiar with its layout, and how a list works, versus a group, it’s pretty easy to use. The real issue is when you’re using Squarespace and MailChimp together. Squarespace has a MailChimp plugin, but it’s surprisingly difficult to link the two systems together! If you make a new form on Squarespace, it makes an entirely new storage system for you in MailChimp. This is definitely a testament to issues with Squarespace’s forms, and not a MailChimp issue, but I think it’s good for people to know the limitations of the Squarespace/Mailchimp integration ahead of time. To get around this, we use Zapier to take information from a Squarespace form, put it into Google Docs, and then into MailChimp.
Co-founder - Sutro
MailChimp’s user interface is great. We’re always a little curious about the deliverability of our emails, but it gets the job done.
Co-founder & CEO - AdStage
MailChimp is the clear leader in email marketing administration.
Co-founder & CEO - Bold
We use MailChimp for general email blasts and automated drip campaigns.
Co-founder & CEO - Open Listings
We used MailChimp until the list got large. The pricing model doesn’t work when you have over 100,000+ subscribers, and when we hit 500,000+, it was no longer tenable.
Founder & CEO - Good&Co
MailChimp is very good. It can be clunky sometimes when you use the templates, but overall, we’ve been very happy. They’re very inexpensive, or even free, for many companies for a long time, which is a huge advantage of using them.
Co-founder & CEO - Neurotrack
We explored SendGrid, but found MailChimp to be way better. It’s very easy to use, and you can design your own templates. It’s really a no brainer for anyone that is B2C and sends emails repetitively at volume.
Founder - JustDoc
We use MailChimp to send out blog updates. We liked that it was a quick, easy, and free solution for when we were collecting email addresses for campaigns during our pre-launch. It’s now a central repository for our mailing list.
Co-founder & CEO - SpeakUp
MailChimp is intuitive and simple. But it’s also relatively limited, in terms of functionality. We only use it for our newsletter.
Founder - VentureOut
We’ve only used MailChimp twice, but so far it’s good.
Founder & CEO - FORTE
I love MailChimp for its ease of use. It’s a great starter for email automation.
Founder & CEO - Arment Dietrich
I don’t directly use SendGrid or MailChimp, so I don’t have any feedback on them. But we are quick to iterate and change, so if we didn’t like them, we would’ve switched, or invested in another company/one of our startups that does email marketing.
Co-founder & Co-director - Boomtown Accelerator
MailChimp is pretty good, and I haven’t had any problems with it. One possible downside for using them is a downside for your subscribers: there’s a double opt-out for unsubscribing, and some people don’t realize that.
Founder & CEO - Roomi
We use MailChimp for newsletters. The interface is simple, and it keeps getting better and better.
Head of Marketing - Pipedrive
We use MailChimp because it’s fairly intuitive, so it’s easy to get contractors up to speed on it. With MailChimp, I can get someone up to speed in about 30 minutes and get them going on creating campaigns, lists, etc. We know there is more robust software out there, but a much higher learning curve comes along with them.
Founder & CEO - Museum Hack
We’re pretty unhappy with MailChimp. We find that the interface isn’t user-friendly, and we’ve heard a lot of complaints from different people that are not getting our emails. Also, it gets expensive after you go over their free plan.
Co-founder - Monarq
We love MailChimp! We have had no issues whatsoever.
Founder & CEO - VProud
We’re using MailChimp now, but are about to transition to Marketo. There’s nothing in particular we don’t like about MailChimp, but are looking to centralize our marketing in one solution.
Co-founder & CEO - Priori Legal
I think there’s no better tool than MailChimp for email marketing.
Founder & CEO - Brick & Portal
I really like MailChimp because it’s simple, really easy to use, and it makes your content visual. There’s nothing more boring than text, and I should know since I’m coming from the PR industry (a very text-heavy industry)! MailChimp helps you get beyond text and brings your content to life.
President - Martin Waxman Communications
MailChimp is good for early stage companies, especially because it’s free when you sign up. But once you start scaling and growing, you hit a limit, and you’ll need to pay for additional services or look for alternatives. We’re looking into Infusionsoft for the future.
Co-founder & CEO - Queen of Raw
We use MailChimp. Sometimes people think the emails are spam, but compared to others, it’s the best you can get. I’ve seen people skin MailChimp and it seems to work to get around the spam issue.
Founder & CEO - Social Data Collective
MailChimp is generally pretty good. We like that it’s easy to use, their list management tool works well, and it integrates well with the email sign up on our site. They’ve improved the interface over the years, but one thing I’d like to see is stronger design capabilities. It’d be great if they could be more like the Squarespace of email marketing.
Co-founder - Mexicue
MailChimp is simple, easy, and gets the job done. We use them for our monthly newsletters. They’ve got the right tools and templates for beginners to pick up on quickly, but they also have developer features in case you want to run more complex email campaigns. We have a lot of clients who also use MailChimp with a lot of success.
Founder & CEO - Creative Business Inc.
MailChimp is way more intuitive than HubSpot, but you have to make it part of a process, which can make it a hassle sometimes.
Founder & CEO - Reactful
For newsletters, email blasts, and announcements, we use MailChimp. It’s easy to use and simple to manage.
Founder & CEO - Shoppimon
I like MailChimp. It was free until very recently; I started paying because we went over 2000 contacts. The product is really nice to work with. There are some drawbacks, but you can set those aside.
Co-founder & CEO - Comeet
We use MailChimp a little bit as well; it’s cost-effective for the acquisition team. And they have reasonably good segmentation. But if we had designed it ourselves, we would’ve wanted more freedom.
CEO & Founder - x.ai
We use MailChimp for email marketing, and we also tie it into Unbounce for landing pages. We don’t do a ton of email marketing (only bi-monthly newsletters at this point), but for our needs, it’s been great.
Co-founder - BuzzStream
We use MailChimp to manage the mailing list for our side project called Coverr (Coverr.co). Coverr provides beautiful, free videos for businesses, and is going to be a great tool for other startups. It’s one of the most upvoted products on Product Hunt right now!
Co-founder & CEO - Veed.Me
MailChimp’s software works well. I used to use Constant Contact, and MailChimp is more intuitive. It’s easy to create templates, quickly see how many people open your emails, and even see the number of times they open the emails, etc. They are great for helping your business identify and focus on your most engaged followers.
Co-founder & CEO - Commonwealth Joe
I really like MailChimp. It’s user-friendly, they make everything easy to track, and the emails look great. They’ve also been introducing a lot of new features, like more drip campaign support, which is very exciting.
Co-founder & CEO - Sociality Squared
I wish MailChimp’s formatting was easier to work with than it is currently. I can’t edit the email templates easily, which gets frustrating.
Head of Growth - Overlap
MailChimp works pretty well; their templates are nice, and they have the overall features we need. But recently, we had a horrible customer support experience with them. They had set up some new filter to block spammers, and for whatever reason, the filter was blocking us because of recycled IP addresses. The error messages from the API were confusing, and when we opened a support ticket with them, they said there was nothing they could do about it, and said we had to switch IP addresses (which we couldn’t easily do, since we’re on Heroku). They took no responsibility, and just kept telling us it was our problem. We only started experiencing the issues when they enabled the filters 2-3 weeks prior, and they wouldn’t just turn off the filters, even though that was clearly causing the problem. Another downside of using them is that it gets tricky to do more complex things, and you want to set something up to match filters like, “if anyone’s been on the waitlist longer than a week, send them an invite. But if they’ve been waiting longer than 2 days, but not more than a week, send them something else.” We ended up doing the complex automations in Intercom instead. Overall, though, MailChimp is good.
Co-founder & CEO - Fieldbook
We use MailChimp and Mandrill, so we use the full MailChimp package. They provide you with a very easy to use system, and their platform is amazingly simple. We are able to get from planning to sending in an extremely short amount of time.
Co-founder & CTO - Spree
MailChimp is the core product we use for email marketing. We’ve looked at alternatives too, but MailChimp is the one we grew up on. They were the mainstream product three years ago when we started, so we chose them, and now at this point, we’ve tailored MailChimp to fit our needs and be exactly what we want and need.
CEO - Zumper
I love MailChimp. I’ve used it at lots of different companies, and I think it’s awesome.
Managing Director - Impact Hub NYC
We chose MailChimp because it’s simple to use and it has the basic features we need, like mail automation.
Co-founder - Chrobrus
We use MailChimp to send marketing campaigns to leads after they’ve gone through our drip campaigns from SalesLoft.
Co-founder - TheSquareFoot
We are using MailChimp, as I used them at a previous company. It works for us for now, but sometimes seems overly simple.
Founder & CEO - Dibs
We originally started looking at email marketing solutions very early on, when we only had three employees. Some of the more advanced solutions, like Sailthru, were too expensive. And we looked at lighter, and less expensive, solutions like MailChimp, but they were too simplistic. So we built our own custom systems for drip campaigns and email marketing to existing and potential users. Custom solutions worked for us, but you have think ahead and know that you will have to devote engineering resources to keep it all up to date. We don’t have cookie-cutter email needs that could be met by a solution like MailChimp.
Co-founder - Kinnek
We use MailChimp for newsletters, but we haven’t had much experience with it yet. That initiative will be starting in earnest in early 2016.
Co-founder & CEO - Truman James
We do very little email marketing. We do use MailChimp, but we use them very sporadically.
Founder & CEO - Venwise
We use MailChimp, but we don’t really use it a lot. It’s not a big marketing channel for us, so we’re just experimenting with it for now.
Head of Finance - Dots
MailChimp has been great for a nontechnical founder like me. I can get everything done on my own, with no coding required.
Founder & CEO - Blinkbuggy
We’re really under the radar, so we’re not actively using MailChimp much. But when we start marketing, I expect we will use MailChimp. We’re using it mainly to coordinate alpha testing at this point.
Co-founder - Datavore Labs
We’re using MailChimp’s backend, and we’ve highly customized it. I ran an email company for 13 years, and because we’re email people, we didn’t need anybody to help us with strategy--we just needed the tool. If I needed something more advanced, I would’ve used ExactTarget or something more advanced, but I just needed a good tool, no expertise, and MailChimp fit the bill.
Founder & CEO - messageLOUD
We like MailChimp, but we rely much more heavily on text messaging, and we do much more sophisticated work on that side--we use Mobile Commons for domestic texting, and will be starting with mGage in January 2016 for international SMS. Email marketing is not a huge focus of ours because young people respond so much more to text, and mobile begs you to have a conversation in a way that email doesn’t. For our audience, email adds a lot of friction. That said, we have over 2 million young people that we email each week with different volunteer opportunities, using Mailchimp. We do weekly A/B testing of subject lines with their tool, and their templates come equipped with buttons and layouts that allow us to generate a high number of clicks.
CEO - DoSomething
We communicate with visitors and other people that just stop by the space, via MailChimp. I’ve had a pretty easy time with it.
Chief Operations Officer - CTRL Collective
We chose MailChimp because they’re great and free (until mass scale). I also chose them based on reliability and familiarity. I’ve used them at a few other companies too--I’ve been using them since they launched.
Founder & Head of Operations - Wheelhouse
MailChimp is great for communicating with people who are already our customers. It moves in conjunction with Zapier. We’ve been able to automate a combination of transactional and drip emails with our existing customers
Co-founder & CIO - Enplug
The best part of MailChimp is the integrations. It’s super easy to integrate MailChimp with a ton of different software options. The one downside is that the built-in designs are not very sleek, so you need to custom-build your email campaigns using HTML, rather than using their templates.
CEO & Co-founder - Plum Print
We found MailChimp much easier to use than any other provider. Their ease of managing contact lists was the big reason we chose them. Adding and deleting people is really easy, which is very helpful.
Co-founder - GoKid
We use MailChimp and like their responsive email templates and reliable email delivery.
Chief Design Officer & Co-founder - Zola
We’ve partnered and integrated with MailChimp, but small businesses scale out of them pretty quickly, so you have to figure out which solution is best for you.
Founder & CMO - Cloze
We use MailChimp as a backup in case something goes wrong with SendGrid.
Co-founder & CEO - BarterSugar
To date, we’ve been using MailChimp, but we’ve outgrown it now, and will begin running all emails through Pardot in the next 60 days. We’re in the process of scaling our business to multiple locations across the US, and we need a more robust platform. MailChimp has served our needs well up to this point. It’s great for being simple and easy to use, but at this point we need to be gathering more data about our email campaigns.
Founder & CEO - Alley
I tried Constant Contact and VerticalResponse years ago, but didn’t like either of them. I don’t even remember how I found MailChimp, but I’m glad I did. It just works for me.
Founder & CEO - Writing It Right For You
MailChimp is ridiculously easy to use. It is also ridiculously well-priced, which is important. It doesn’t have some of the deeper functionality that some marketing automation tools have, but we haven’t needed that level of functionality yet. It does all of the Level 1 requirements that we need.
President & Founder - SmarterU
We’re not using any email marketing software at this point. We will probably use MailChimp when the time comes, as I’ve had some experience with them before, and I really like them.
Founder & CEO - Halo Life Science
We use MailChimp for sending short newsletters.
We had been using Mailchimp for a long time, but it isn’t scalable for our purposes anymore. We were happy with them, but at this point we’ve outgrown them and we’re moving on to HubSpot in the next couple months. For instance, with MailChimp you’re limited to 60 groups, and we need more, as well as a better system now for labeling, etc. Our mailing list is now around 250,000, and we just need a more comprehensive, sophisticated tool that will help us scale our email marketing operations.
VP of Marketing - Unbounce
I love MailChimp. We’re small and bootstrapped, and MailChimp made it easy to start with them, and they are able to grow with us. They have very flexible and cost-curve considerate pricing, with a free tier for businesses to use when starting out. It allows us to start small and then move up from there. I also love how well-documented their API is; it makes integration super easy. Also, on a side note, the softest t-shirt I own is a MailChimp t-shirt! In the future, we plan to use Mandrill (developed by MailChimp) for transactional emails like account confirmations.
Co-founder - Quill
We didn’t do much email marketing, but when we did, we used MailChimp. They were a partner, so it was a no-brainer to use them, but we would’ve chosen them regardless. They were a fantastic company to work with all-around, as partners and as a service provider. The entire interface was great, and the reports were top notch. They also have an Aviary editor built into it, so how can you knock it?
Co-founder - Aviary
I chose MailChimp after speaking with other founders. When we first launched, we didn’t have any in-house developers, and MailChimp was much easier to set up and use than other providers. MailChimp also makes tracking things like open rates, click-through rates and A/B testing extremely easy. At the beginning, when our newsletter distribution list was small, it was easy to manage within our budget. However, now that our list has grown substantially, MailChimp is much more expensive.
Co-founder - Bundle Organics
We always used MailChimp for newsletters, but for our transactional emails we used to use SendGrid, which my developers weren’t happy with. There weren't any problems embedding it into our app, but the interface was really clunky. We're trying to embed MailChimp into our app instead.
Founder - SenseHealth
MailChimp allows for easy customization from templated frameworks. MailChimp has also integrations into many other applications, making it easier to work with and gain benefit from other CRM and surveying tools.
Director of Operations - Inxent, Inc.
MailChimp offers the best user experience.
Founder & CEO - Publicize
We chose it because of its UI and pricing.
Founder & CEO - ParkTAG GmbH
In the past, we used other service providers like Constant Contact and HubSpot, but we’ve recently moved everything to MailChimp. MailChimp allows us to run interesting and creative campaigns with API connections, and they just have better tools, reliability and deliverability. And everything we did with HubSpot we can do with MailChimp now, at a much more reasonable price. MailChimp has been great so far, and we foresee being able to use it for a long while. There really isn’t anything better than them in this space, and there’s definitely nothing that is as easy to use.
Vice President of Technology - Golf Genius Software
MailChimp is good, though it's starting to get pricy because we now have a mailing list of over 30,000 people. We're starting to get to a point where I would consider other services because of the price (probably Mandrill or Sailthru).
CEO - Katch
MailChimp was what we were already using when I joined the company. We have years of history with MailChimp, and we’ve always used them for our newsletter. It just works.
Editorial Director & Editor-in-Chief - ReadWrite
We don't do much email marketing in Australia, we do more in Brazil. I wish 1Enrol could cover this service, or at least integrate with MailChimp, because it would be great to have everything on one platform--I think this is one of the things they're going to be working on.
Jose de Andrade
Founder & Director - Hello Australia
We use MailChimp for newsletters. Email marketing is not a big part of our strategy at the moment, but it will become more so, so then we'll probably take a better look at the tools.
Co-founder & CEO - sli.do
We're pretty happy with MailChimp. It has most of the tools we need to make it easy for us to send out emails. It's great at making emails look good, and segmenting is very easy, though the segmenting options are limited. Last year we were content with these offerings, but this year we're doing more interesting targeting, and I do come up against being able to segment to the extent that we'd like to. MailChimp has been good about launching new features over the past year, which has been great, including an automation suite that makes it easier for us to send automated emails based on certain triggers. But they don’t do a great job of publicizing these new features, so a lot of people aren't aware of them.
Founder & CEO - Nine Naturals
They’re great for what we’re currently using them for. We haven’t tried to go enterprise with them, so I don’t know how they would hold up in that situation. I know we are going to need to implement a real marketing automation tool in 2016, but today we’re just hacking together Mailchimp and Salesforce.
CEO - Fluent City
We picked it because everyone said it was the easiest. So far it’s OK.
Founder - Good Zing
We don’t use it a lot, but it has a good API with Mandrill.
Founder - SilviaTerra
We use MailChimp for sending our newsletter campaigns to users and welcome emails to new users. It’s a very thoughtful product that takes what could be a complex/daunting task and makes it very simple. You upload an email into a pre-made template and it integrates with your current analytics platform. I knew nothing about email marketing or mass emails before this, but MailChimp has made it super easy, and their onboarding is fantastic.
Co-founder - Point
It's user-friendly, keeps stuff simple, and has good split testing and analytics.
Co-founder & Chief Creative Officer - Contently
MailChimp gets a 5 out of 5.
Founder & CEO - Knozen
Honestly, because we're small and don’t have a large volume of leads, we don't use it much.We answer each email by hand, and each response is tailored. Mailchimp does integrate with Capsule CRM, and makes everything trackable, so we're keeping it up. Eventually, if we get to the point where we're not able to be as hands-on with each new prospect, we'll probably use it more. Just as with clients, phone trumps email. The minute you get a lead, if you call them back within the first 30 minutes, you're 12 times more likely to close them! So why wouldn’t you?
Owner - Flow Simple
MailChimp has an easy API integration. For startups, having easy integration w/an API may be the #1 most useful/important feature.
CTO - Bowery
MailChimp has a great interface and reasonable pricing.
Co-founder & CEO - SponsorHub
We used MailChimp before, and we tend to go with tools we already know. MailChimp is a good service, and it integrates into everything that we need.
Founder & CEO - Socure
MailChimp is more hands on (than Mandrill), but it works well.
Founder - CheckedTwice
We’ve used MailChimp in the past. We don't use it often, so it's good enough for what we do.
Ron J. Williams
Managing Partner - proofLabs Group
MailChimp is easy to use, and makes it very easy to track and monitor recipients.
Co-founder - NeuroDining
It’s so easy to use.
Co-founder - Monaeo
MailChimp serves its purpose, but it's not flexible at all. It's cheap, easy to deploy and not a big deal. Those factors make it a wonderful product for starting out, but once you want to get more advanced and start integrating data, targeting, segmenting, triggering and splicing data, it becomes difficult. As you become sophisticated and numbers-driven, you start hitting up against walls, and now we're seeing diminishing results with MailChimp. Our business is driven by customer activity, so it becomes unwieldy. There are other products that are more flexible, but it's an exponential increase in cost.
Co-founder - Jump Ramp Games
MailChimp is so easy to use.
Founder & CEO - Hullabalu
It's a good free option. It has an intuitive interface for clients, and a good drag-and-drop builder.
Founder - Green Peak Labs
MailChimp is ubiquitous, cheap and easy to use.
CEO - DeansList
MailChimp has good integrations with other products, like WordPress. It’s simple to use and has a lot of helpful features.
CEO & Co-founder - SideProjects
... we send newsletters through Mailchimp. We also have a series of analytics articles called Analytics Academy that we send out through MailChimp. Mailchimp is a good tool for sending a sequence of emails, week after week, but we’re also looking into moving to Drip
Co-founder & CEO - Segment
We use MailChimp for one-to-many interactions and emails--marketing newsletters, product updates, anything like that. Ease of installation and use were the best traits of MailChimp over the other newsletter managers.
Founder & CEO - Framed Data
We picked it because I already knew the product. It works for us and it integrates into everything we need it to.
Founder & CEO - Founder Shield
MailChimp is pretty easy to get up and going, and it’s pretty affordable. That said, it was hard to configure the way we wanted it--it’s hard to manage lots of overlapping mailing lists. Instead, Mailchimp wants you to have individual people only represented once.
Co-founder - Everplans
MailChimp’s pricing doesn’t exactly reflect the way we want to do mail--it's just another one of those things you don't want to deal with.
CEO - Dasher
We're still struggling to get the hang of Amplitude.
Co-founder and CEO - WayUp
I love MailChimp. It's the standard, but it's the standard for a reason.
Co-founder & COO - Castle
I've used MailChimp for my family's small business before this, so I already knew it. MailChimp’s free account is great, though I think I was actually grandfathered in on some of the premium features. I like a lot of their automation capabilities, so I haven’t felt the need to shop around for alternatives.
Co-founder - Tuckerman & Co.
We don’t use MailChimp much, but we chose it because we're creatures of habit. We'd all used it before, and it seemed like the simplest and easiest UI. I've gotten used to it over the years. It just seems like the best.
Founder & President - Upraised Learning
MailChimp is a great, simple tool to start with.
Co-founder & Chief Creative Officer - Wellinks
We don't do that much email marketing yet, but we're planning to do it soon. I really prioritize ease of use, and MailChimp just makes everything so simple.
Co-founder - BananaDesk
We use MailChimp for content updates.
CEO - Truffle
MailChimp isn’t that great. I'm not wild about their design templates--our emails don't look as good as we want them to.
CEO - Splash
It's very easy to use, they have a nice interface and we can set up all the features/functionality that we want. We send out a monthly client newsletter, and I think people are happy with it. MailChimp has nice reporting/analytics, too.
COO - Citia
We started with MailChimp and never stopped. They had a free service, and when we were doing our research, they seemed the easiest to get set up and start using right away. I also liked their templates. I remember a friend recommended MailChimp to us, and for a long while our email list was small enough that we could keep using the free version.
Co-founder - Journey Bar, LLC
Generally we've been very happy with MailChimp with regard to pricing and execution. We looked at a couple other platforms (including Sailthru), but there wasn't much differentiation between them and MailChimp. Email marketing is a big part of our strategy, and we do a ton of segmentation--over 500 per week. As our list grows, I think MailChimp will continue to be a good option for us.
Co-founder & CEO - Manicube
MailChimp is very easy to use.
We chose MailChimp because of its feature sets and price point.
Founder & CEO - Kargo
Customizing different campaigns with Sailthru takes a lot more labor and effort than we would like, and it's a little clunky, but it's far superior to MailChimp or Mandrill, both of which we have used before. MailChimp didn’t have the drip functionality that we needed. Email marketing is a huge component of our business, and we needed a more robust tool.
Co-Founder & Co-CEO - Plated
We use MailChimp pretty sparingly. It's good at what it does, we just don't really market that way.
Founder & President - Lionheart Software
MailChimp is very simple to setup and easy to use.
CEO & Founder - 15Five
We used MailChimp before, and we loved it. It's really easy to use and create emails, has more options for emails design than getresponse, but the deal-breaker was that MailChimp is very limiting in terms of whom you can send emails to. Your list has to be organically grown: You can't add people yourself, even if they're OK with you adding them, like members lists from organizations we were part of.
Co-founder Stage: Seed - Sailo
We like their freemium service, which has a lot of integrations with other systems.
CEO & Co-Founder - Thunder
We like the design elements of MailChimp, but we don’t use it very much because it's not directly relevant to our core marketing strategy. We chose it because of the ease with which you can design and configure templates--we’re able to quickly put together a nice-looking email, deliver the message, and track open rates and click-throughs. MailChimp is very pleasant to use overall.
CEO - TreSensa
MailChimp is our tried and trusted solution. I used them in my last few startups, too. With MailChimp, you can start really small and scale fairly big.
Founder & CEO - Tinkergarten
It has it all and it's priced reasonably.
Founder & CEO - AirHelp
Mailchimp is great, it does everything we want it to do. Unless you're getting very sophisticated or big, I can’t imagine not using it.
Founding Partner, Chief Product Officer - Reboot
We chose Mailchimp because of its robust feature set and relatively low cost. The cons: You can't get someone on the phone—so if your account gets flagged for some reason, it could jeopardize your ability to send.
Co-founder - Crowdability
It’s easy to use, has good tracking, and it’s free.
Co-founder & CEO - Vengo
MailChimp we use to grab attention. We send out a weekly newsletter with what we think are the best events. We send it to probably 3215,000 people. I'd used MailChimp before and out of all the available tools, it’s the most user-friendly. Something like Constant Contact would work just as well, but MailChimp is my personal preference.
Founder & CEO - EventBrowse.com
As we’ve scaled, the contents of our mailing list have really diverged. At first it was just a few people who got everything, so we used Google Docs to manage them, but then the list just grew too big. This is especially true for our investor and technical lists; they both get different types of information from us, so we needed a better way of keeping track of them. I picked MailChimp because I was familiar with it. It was cheap enough that we didn't care much beyond that.
Co-founder & CTO - Concord Systems
57%Stacklist Startups Are Using MailChimp
MailChimp is an email marketing solution that helps you run effective email campaigns and send newsletters. With a clear focus on ease of use, MailChimp streamlines complicated workflows into simple tasks, like sending automated, segmented emails or keeping detailed records about specific customers. The tool also offers advanced reporting options that help you monitor sales, website activity and revenue. MailChimp keeps its prices low, so it comes as no surprise that it’s the most commonly used email marketing software among startups.
MailChimp is used by a wide variety of companies across many industries, but it is especially popular among smaller, early-stage startups with less complex email marketing needs who appreciate MailChimp’s simplicity.
MailChimp’s initial plan is free, letting you send 12,000 emails each month to a recipient base of 2,000 people. However, once you grow past either of those benchmarks, you must purchase a monthly package. A basic package starts out at $10 per month and grows from there, but if you’re uncomfortable with a monthly fee, you can also choose to pay per email--from $0.03 to a fraction of a penny per email, depending on how many bulk credits you purchase.
Visit the website: http://mailchimp.com/