Anti-Spam SMTP Proxy Server implements multiple spam filters
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
IGSuite is a web-ajax-based Integrated Groupware Suite
SaltOS, ERP, CRM, Business Management Suite, Josep Sanz Campderrós
C library for sending e-mail (with attachments) from C/C++
Simple-to-use/-install issue-tracking system: web, REST, email, CLI
one server framework
Multi-protocol server written in Java
Multi user address book application accessable through the web.
Free and open source webmail software
Converts quoted-printable, UTF-8, UTF-16BE, UTF16LE to 8-bit.
Source code for be able to use Relation Tags.
File sharing via e-mail
A simple native java network library
ImpraStorage provided a private imap access to store large files
javascript to convert thunderbird/seamonkey filters to sieve rules