MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Dragon Responsive Email Designer - Dragon Email Designer provides an intuitive drag and drop newsletter design tool.
Kingmailer - Kingmailer helps you send, receive and route/forward emails.
Marble Responsive Email Designer - Marble helps you design beautiful and mobile-friendly emails and newsletters.
Awesome Mails - Awesome Mails creates beautiful image map emails, featuring an easy to use drag-and-drop editor...
Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.