Maileroo - Maileroo is a powerful email delivery platform, featuring a user-friendly SMTP service and Email API. It specializes in supporting transactional emails with advanced features like delivery tracking, as well as detailed open and click monitoring.

Marvel (Comics) API - Create awesome stuff with the world's greatest comic API

Postmark Express - What happens to your emails after you hit the "send" button?

Comixology Unlimited - Netflix for comics and graphics novels by Amazon

Warmup Inbox - Warmup Inbox is a tool that automates the process of warming up your email inboxes, raising your sender reputation and inbox health automatically.

DC Universe - The DC Comics streaming service w/ original content