GNU Mailman is a mailing list management software. Mailman project was started long time ago before the Millennium. Since its birth it has become the most intelligent tool for handling mailing lists ever. Huge number of companies with Fortune 500 members among them have been using Mailman for years. The new version Mailman 3 brings to us even better user experience and communication power.
Astral - A social network for augmented reality 📍
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
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Sympa - Sympa is an open source (GNU GPL) mailing list management (MLM) software.
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MailChimp - MailChimp is the best way to design, send, and share email newsletters.