We use Litmus Scope to see the code behind any email easily. It’s very sneaky. We’ve found that something difficult to do is extract email from your Gmail. Litmus Scope lets you extract that stuff easily without having to set up multiple accounts or our own email server to do it for us.
Co-founder, Growth - Really Good Emails
1%Stacklist Startups Are Using Litmus Scope
Create a clean, web-based version of any email, with desktop and mobile previews. It's perfect for sharing, and it's totally free. The Scope It Bookmarklet lets you scope an email from inside supported webmails like Gmail. Just click the button when you see an email you want to scope!
Visit the website: https://litmus.com/scope/