Postfix 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... Free Open Source Mac OS X Linux No features added Add a feature 21 Like
Exim Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet. Free Open Source Mac OS X Windows Linux No features added Add a feature 12 Like
Dragonfly Mail Agent A small Mail Transport Agent (MTA), designed for home and office use. Part of http://alternativeto . Free Open Source Linux BSD No features added Add a feature 3 Like
Sendmail Sendmail is a general purpose internetwork email routing facility that supports many kinds of transfer and delivery methods, including the Simple Mail Transfer Protocol... Free Open Source Mac OS X Linux No features added Add a feature 3 Like
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... Free Open Source Linux BSD Self-Hosted No features added Add a feature 2 Like
Microsoft SMTP Server Configure SMTP e-mail in IIS when you want to deliver e-mail messages from your site. Mail can be delivered immediately or it can be delivered to a file location on disk... Commercial Windows Email Forwarding Add a feature 1 Like
PowerMTA Email gateway application (SMTP server) that makes it easy for senders to adopt the latest authentication specifications ( SPF and DKIM) to comply with changing ISP... Commercial Windows Linux Self-Hosted No features added Add a feature 1 Like
sSMTP sSMTP is a simple MTA to deliver mail from a computer to a mail server. sSMTP is simple and lightweight, there are no daemons or anything hogging up CPU; Just sSMTP.... Free Open Source Linux No features added Add a feature 1 Like
Hectane An SMTP client that is extremely easy to configure and use, providing a simple HTTP API that is used for sending emails. Free Windows Linux No features added Add a feature 2 Like
EmailSuccess EmailSuccess, an advanced SMTP Server (MTA) built from the ground up to handle the most critical reliability, performance, security, and deliverability requirements. Commercial Linux Email deliverability Encrypted email Add a feature 0 Like
