26/07/2015

• mail-tester.com : Free online service that allows you to test your emails for Spam, Malformed Content and Mail Server Configuration problems
• Tutanota : Tutanota is an open-source end-to-end encrypted email software and freemium hosted secure email service based on this software
• N1 : N1 is an open-source mail client built on the modern web with Electron, React, and Flux. It is designed to be extensible, so it's easy to create new e...
• sovereign : A set of Ansible playbooks to build and maintain your own private cloud: email, calendar, contacts, file sync, IRC bouncer, VPN, and more.
• Can I email… : Support tables for HTML and CSS in emails.