Stripo - Stripo is an all-in-one email design platform. We enable our clients to build emails of any complexity, including interactive AMP emails, really fast and easy.
MailDeveloper - Advanced editor for responsive HTML emails
MJML - The open source framework for responsive emails
MailerLite - Affordable Email Marketing Software. Get all features (Segmentation, Automation, A/B testing) for up to 1,000 subscribers & send unlimited emails for free!
BeeFree.io - Bee is MailUp's drag-&-drop editor for responsive design emails.
Unlayer - Embeddable email editor and page builder for SaaS and CRMs