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
blat Blat is a small, efficent SMTP command line mailer for Windows. It is the SMTP *sending* part of an eMail User Agent (MUA) or eMail client. As such, Blat sends eMail via... Free Open Source Windows Command line interface Scripting Add a feature 6 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
Courier-MTA 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... Free Open Source Mac OS X Linux BSD Self-Hosted No features added Add a feature 7 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
msmtp In the default mode, it transmits a mail to an SMTP server (for example at a free mail provider) which takes care of further delivery. To use this program with your... Free Open Source Linux Xfce No features added Add a feature 1 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
Mailer Free utility to send emails from the command line. No Installation. All contained in one file. Free Windows Linux Command line interface Add a feature 1 Like
sendEmail sendEmail is a lightweight, command line SMTP email client. If you have the need to send email from a command line, this free program is perfect: simple to use and... Free Open Source Mac OS X Windows Linux Command line interface Scripting 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
CMail CMail is a command line mailer, originally developed for testing mail server software, but is simple enough to use interactively. CMail supports IPv6, TLS/SSL... Free Windows Command line interface Support for IPv6 Scripting Add a feature 1 Like
NikaMail 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... Free Open Source Mac Linux Exchange email POP3 Support Add a feature 1 Like
BulkMTA BulkMTA is Commercial Mail Server Similar to PowerMTA. IP Rotation, DKIM, Sender / Receiver Rate limiting Commercial Mac OS X Windows Linux No features added Add a feature 0 Like
