Freedom251 › Mail Server Software
Haraka
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Haraka | Open-source SMTP server · MIT licensed · requires Node.js | Free |
As haraka.github.io lists them, read 8 Oct 2026. The maker's own page has the final word.
Facts from Haraka's own pages
- Authentication security
- The flat-file authentication plugin stores passwords in clear text, and its documentation recommends using auth-encfile to protect credentials. · haraka.github.io, 8 Oct 2026
- Integrations
- Listed plugins support systems and services including LDAP, Dovecot, Redis, Kafka, MongoDB, SpamAssassin, and Rspamd. · haraka.github.io, 8 Oct 2026
- License
- Haraka is MIT licensed. · haraka.github.io, 8 Oct 2026
- Mail filtering
- Haraka can be used as a filtering MTA, with plugins for spam protection and checks such as DNS blocklists. · haraka.github.io, 8 Oct 2026
- Not a mail store
- Haraka says it is not a mail store, LDA, or IMAP server and is typically used alongside such systems. · haraka.github.io, 8 Oct 2026
- Outbound delivery
- Haraka includes an outbound mail delivery engine that queues messages marked for relaying. · haraka.github.io, 8 Oct 2026
- Plugin architecture
- Its modular plugin system lets JavaScript programmers change how the server behaves. · haraka.github.io, 8 Oct 2026
- Project stewardship
- The website says Haraka was started by Matt Sergeant and is maintained by the Haraka community. · haraka.github.io, 8 Oct 2026
- Purpose
- Haraka is a high-performance, flexible SMTP server written in Node.js. · haraka.github.io, 8 Oct 2026
- Runtime requirement
- Haraka requires Node.js and can be installed through npm, yarn, or pnpm. · haraka.github.io, 8 Oct 2026
- Scale
- The documentation says Haraka can serve thousands of concurrent connections and deliver thousands of messages per second. · haraka.github.io, 8 Oct 2026
- Submission agent
- Haraka can run as a message submission agent on port 587 with authentication and DKIM plugins enabled. · haraka.github.io, 8 Oct 2026
- Support
- The project directs users to its mailing list and GitHub Issues for help. · haraka.github.io, 8 Oct 2026
- TLS
- The TLS plugin enables STARTTLS and supports configurable certificates and TLS settings. · haraka.github.io, 8 Oct 2026
Where Haraka stands on Freedom251
- Mail Server Software#14 of 34