Anti-Spam SMTP Proxy Server implements multiple spam filters
Booking/reservation of meeting rooms/equipment with e-mail invitations
Simple-to-use/-install issue-tracking system: web, REST, email, CLI
imap cleanup & command line tool
The free cross-platform antivirus software tool-kit
Converts quoted-printable, UTF-8, UTF-16BE, UTF16LE to 8-bit.
Tools to convert Z mark-up to HTML or text.
Allows you to submit events to an RSS feed via rest api (http post)
Provide a Java Mail Provider for Exchange-hosted mailboxes