MailDeveloper is an advanced editor for responsive HTML emails.
MJML leverages high level components to abstract the complexity of responsive email. It embeds all of the hacks needed to make emails responsive everywhere, from Outlook 2003 to Inbox by Gmail: conditional comments, media queries and fallbacks. Based on a semantic syntax, it’s very easy to learn, use and maintain.
REBEL API Lite
Build beautiful responsive emails with just JSON
Forget about pesky email client rendering or learning a new markup language. Send JSON and receive responsive HTML emails.