Open Source Email App for iOS
Archive a lifetime of email and chat. Offline search, analytics
Open Source Email App for Android (fka K-9 Mail)
Notifuse is an open-source & modern emailing platform
Google Mail registration
High performance, self-hosted, newsletter and mailing list manager
Anti-Spam SMTP Proxy Server implements multiple spam filters
The Next Generation Mail Transport Class.
OpenXP 5 - a multi-protocol offline mail and news reader
Anti Spam SMTP Gateway
GLX Mail
Open source auto dialer for voice, fax and SMS campaigns
All your email accounts in one place.
Open source Fax server software for inbound / outbound internet Faxing
Simple, modern & fast web-based email client
software for email automation (newsletters, transaction mails, etc.)
Guest WIFI and SMS Marketing Kiosk System
The cult-favourite eMail client formerly known as Qualcomm Eudora
Python API for Sendmail Milters.
Simple, modern & fast web-based email client
Multi-protocol server written in Java
Multi user address book application accessable through the web.
Ream-C is a console-based full screen mail client