Awesome Mails - Awesome Mails creates beautiful image map emails, featuring an easy to use drag-and-drop editor...
HTMLEmail.io - Responsive HTML email templates for startups & developers
Marble Responsive Email Designer - Marble helps you design beautiful and mobile-friendly emails and newsletters.
Startup Emails - Responsive HTML email templates for startups
Mizmoz - Easy-to-use, state of the art, email service provider dedicated to support growing businesses.
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.