Anti-Spam SMTP Proxy Server implements multiple spam filters
Powerful Open Source Email Marketing app with analytics & segmentation
Google Apps Script to send third party recruiter email to spam
Unified Communications Server
IMAP to IMAP Copy
imap cleanup & command line tool
an 'auto-reply' bot for your mail server
CheckeredFlag is a super simple mail server.
Simple web interface for Postfix domains, accounts, aliases
The free cross-platform antivirus software tool-kit
Converts quoted-printable, UTF-8, UTF-16BE, UTF16LE to 8-bit.
Source code for be able to use Relation Tags.
Business webmail modular application with mobile client
ImpraStorage provided a private imap access to store large files
Email client based on the Eclipse RCP platform.