OpenSMTPD
Secure and simple SMTP server from OpenBSD
OpenSMTPD is a free implementation of the SMTP protocol developed by the OpenBSD project. It emphasizes simplicity, security, and a readable configuration syntax for running your own mail relay or server.
Key features
- Simple configuration
- Security focused
- SMTP relay and delivery
- Filters via extensions
Pros & cons
Strengths
- Clean concise config
- Strong security record
Trade-offs
- Fewer features than Postfix
- Smaller ecosystem
OpenSMTPD replaces
Compare OpenSMTPD
13 head-to-head comparisons.
- OpenSMTPD vs listmonk
- OpenSMTPD vs Docker Mailserver
- OpenSMTPD vs Mailspring
- OpenSMTPD vs Postal
- OpenSMTPD vs MailHog
- OpenSMTPD vs Mail-in-a-Box
- OpenSMTPD vs Stalwart Mail Server
- OpenSMTPD vs mailcow
- OpenSMTPD vs Mautic
- OpenSMTPD vs Mailpit
- OpenSMTPD vs msmtp
- OpenSMTPD vs DragonFly Mail Agent
- OpenSMTPD vs Nullmailer
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