Rapid spam filtering system
XRocket Email Tool for Sending Emails to Multiple Users
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
Powerful Open Source Email Marketing app with analytics & segmentation
Simple-to-use/-install issue-tracking system: web, REST, email, CLI
PHP SDK to connect with Easy Email Verification API and validate email
Bubbles the simple, easy to use HTTP web server, browser controlled
An easy-to-use anti-spam email gateway
MOX Bulk Email Sender is free and powerful bulk email sender script