Polymail Sequences - Simple, powerful multi-stage email campaigns
Spam Check - A free JSON API to check your email messages' spam scores
MailChimp Snap - Send simple, photo-based email campaigns from your phone.
TestSubject - Test how your email subject line displays on mobile devices.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
CanIPhish - Blend social engineering with real-world phishing simulations to train your users how to detect the most advanced threats.All in a completely self-service, fast, free and modern SaaS platform.