Awesome Mails - Awesome Mails creates beautiful image map emails, featuring an easy to use drag-and-drop editor...
NeverBounce - Real-time email verification and cleaning to ensure emails never bounce.
Marble Responsive Email Designer - Marble helps you design beautiful and mobile-friendly emails and newsletters.
ZeroBounce - Removes invalid emails from your list to prevent email bounces from ruining your deliverability.
Dragon Responsive Email Designer - Dragon Email Designer provides an intuitive drag and drop newsletter design tool.
Kickbox - Verify your email address lists with our drag and drop interface, or integrate into your app with our API. Prevent fake and bot account sign-ups by confirming your users are real humans with a real email address.