poMMo is versatile Mass Mailing software. Add a mailing list to your website, or organize stand alone mailings. Unique features such as the ability to mail subsets of your subscribers set it apart from alternatives.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.