Take back control of your email with this mail server in a box
Proton Mail Bridge application
Open Source Email App for Android
Server supporting the Signal Private Messenger applications on Android
The classic email sending library for PHP
eMail is a fork of Interlink for IA-32 i686 with more optimizations.
Lightweight Open Source webmail written in PHP and JavaScript
Instant messaging platform
Mail hosting made simple
Universal server
Distributed instant messaging system for developers
Client daemon to move mail from POP and IMAP to your local computer
Bubbles the simple, easy to use HTTP web server, browser controlled
The original full-platform IM communication layer framework
Pure Java TFTP server.
Booking/reservation of meeting rooms/equipment with e-mail invitations
SMTP email proxy and relay server
Free white-label webmail and admin workspace for Zimbra deployment.
Implementation of the OFTP2 protocol (RFC 5024)
Anti Spam SMTP Gateway
A simple and fast cross-platform solution to send mass emails.