Mail 250 - Mail250 provides end-to-end solutions designed for Web App.
RightMessage - Ask the right questions, pitch the perfect offer
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Plainflow - Behavior-based customer journeys for your SaaS
Dragon Responsive Email Designer - Dragon Email Designer provides an intuitive drag and drop newsletter design tool.
Visual Marketing Automation - An insanely fast automation builder by ConvertKit