Description: InstAddr is an open-source alternative to MailChimp for email marketing campaigns. It provides easy tools for building email lists, designing campaign templates, and tracking engagement.
Type: software
Pricing: Open Source
Description: Postfix is a popular open source Mail Transfer Agent (MTA) that routes and delivers email. It is a fast, easy to administer, and secure alternative to Sendmail. Postfix handles basic email routing and delivery well.
Type: software
Pricing: Open Source