We have used MailChimp and SendGrid in the past. We are currently testing Appboy; we are integrating it right now. It is the new up-and-coming tool to acquire customers and gain attribution: an all-in-one email marketing tool. We have not completed the transition yet, but it works very well for analytics and notifications.
SVP of Engineering - Lola Travel
We use AppBoy for all of our CRM campaigns. It lets us have a one-to-one relationship with our users, and to deliver to them the right message at the right time.
Co-founder & CEO - Peak
For app engagement tracking, we use Appboy; we have been using them since they formed as a company. It’s great and does everything that we need: push notifications, analytics, retention analysis etc.
Co-founder & CEO - BottlesTonight
Visit the website: https://www.appboy.com/