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OpenSMTPD Alternatives

OpenSMTPD Alternatives

OpenSMTPD

OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with some additional standard extensions. It allows ordinary machines to exchange e-mails with other systems speaking the SMTP protocol.

Best Open Source OpenSMTPD Alternatives

Want a really good OpenSMTPD alternative? Take a look at these popular alternatives if you're hunting for software similar to OpenSMTPD. Let's take a quick peek at some comparison that highlight your device and platform.

Postfix

Postfix

FreeOpen SourceMacLinux

Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail. It attempts to be fast, easy to administer, and secure. The software is also known by...

Exim

Exim

FreeOpen SourceMacLinux

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.

Courier-MTA

Courier-MTA

FreeOpen SourceMacLinuxBSDSelf-Hosted

The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols, such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier...

Features:

  • Email Server
  • SMTP
Sendmail

Sendmail

FreeOpen SourceMacLinux

Sendmail is a general purpose internetwork email routing facility that supports many kinds of transfer and delivery methods, including the Simple Mail Transfer Protocol...

Haraka

Haraka

FreeOpen SourceSelf-HostedNode.JS

Haraka is an open source SMTP server written in Node.js which provides extremely high performance coupled with a flexible plugin system allowing Javascript programmers...

NikaMail

NikaMail

FreeOpen SourceMacLinux

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...

Features:

  • Exchange email
  • Email Server
  • POP3 Support
Go-Guerrilla

Go-Guerrilla

FreeOpen SourceWeb

A lightweight SMTP server written in Go, made for receiving large volumes of mail. To be used as a package in your Go project, or as a stand-alone daemon by running the...

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