Haraka is described as 'Open source SMTP server written in Node.js'. There are six alternatives to Haraka for Linux, Mac, Self-Hosted solutions, Roundcube and BSD. The best alternative is Postfix, which is both free and Open Source. Other great apps like Haraka are Mail-in-a-box (Free, Open Source), OpenSMTPD (Free, Open Source), Exim (Free, Open Source) and Sendmail (Free, Open Source).
- 6 alternatives
- NikaMail is a portable, extendable, zero-config email server. It is designed to perform automation tasks, provide access to mailboxes (port 110), serve as a mail transfer agent (port 587) and mail exchange service (port 25). NikaMail supports TLS. View 14 alternatives to NikaMail
- Free • Open Source