Targeted.io - Test your email designs across 30+ clients before you send'm
Awesome Mails - Awesome Mails creates beautiful image map emails, featuring an easy to use drag-and-drop editor...
Really Good Emails - A large collection of good product email design.
Flexmail Solution - Professional email marketing with powerful and easy-to-use features
Stamplia - High converting and beautifully designed email templates
Kingmailer - Kingmailer helps you send, receive and route/forward emails.