Ream-C is a console-based full screen mail client
HEML is an open source markup language for building responsive email
Bypass e-mail host attachment blockers.
Simple, web-based address & phone book
Roundcube plugin to create client-side e-mail filtering.
A Free form-data to Email platform for anyone to use.
A program to send mail via SMTP from command line
An extensible desktop mail app built on the modern web
Open source DMARC implementation
mapSoN is a challenge/response spam filter for Unix
Lets you access Gmail using low badwidth...
Class EnviaMail la cual envia E-mails!
Bunch of useful filters for AngularJS with no external dependencies!
Secure mail + Tor gateway