Anti-Spam SMTP Proxy Server implements multiple spam filters
Powerful Open Source Email Marketing app with analytics & segmentation
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
SaltOS, ERP, CRM, Business Management Suite, Josep Sanz Campderrós
HotelSoft1.2Acs is a free open source software for the Hotel actvity
Free Email Backup Software | Email Backup App for Android
Simple-to-use/-install issue-tracking system: web, REST, email, CLI
Open source e-mail tracker made with Flask, setup & run in 10 minutes
Self-hosted newsletter app
Web and API based SMTP testing
Multi-protocol server written in Java
tinyCampaign is a simple and lightweight newsletter system.
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
javascript to convert thunderbird/seamonkey filters to sieve rules
A Java application for transferring computer files in 5 letter groups