Anti-Spam SMTP Proxy Server implements multiple spam filters
SMTP email proxy and relay server
Sync Outlook with Google, SOGo or any other CalDAV / CardDAV server
mailbox synchronizer
Powerful Open Source Email Marketing app with analytics & segmentation
Sync Outlook contacts and calendars with Google
Fast Bayesian spam filter along lines suggested by Paul Graham
Free Extracts Emails, Phones and custom text from Web using JAVA Regex
Mail Notifer for Windows
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
Remote anti spam utility
Mailing List Manager - Web-based, Self-Hosted, Feature-Rich
C library for sending e-mail (with attachments) from C/C++
Takes your crappy password and makes it non-crappy
A simple and fast cross-platform solution to send mass emails.
SaltOS, ERP, CRM, Business Management Suite, Josep Sanz Campderrós