Based on our record, Unlayer seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Before that we had some luck using RazorLight, but we did all email templates in an editor Unlayer, exported the html and made a layout and view files. Source: about 1 year ago
Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.
MJML - The open source framework for responsive emails
Mockup Generator - Create attractive product screenshots with just a few clicks
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.
Previewed - Beautiful mockups & graphics for your next app
BeeFree.io - Bee is MailUp's drag-&-drop editor for responsive design emails.