20 Like Postfix Good alternative? YES NO 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 Linux No features added Add a feature
7 Like Courier-MTA Good alternative? YES NO 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 Linux BSD Self-Hosted No features added Add a feature
2 Like OpenSMTPD Good alternative? YES NO 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
3 Like Sendmail Good alternative? YES NO 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 Linux No features added Add a feature
3 Like Dragonfly Mail Agent Good alternative? YES NO 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
1 Like Microsoft SMTP Server Alternative? YES NO 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 Good alternative? YES NO 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 Good alternative? YES NO 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
2 Like Hectane Good alternative? YES NO 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
1 Like Haraka Good alternative? YES NO 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... Free Open Source Self-Hosted Node.JS No features added Add a feature
2 Like MailerQ Good alternative? YES NO MailerQ is a high performance Mail Transfer Agent (MTA), designed to deliver large volumes of email messages at very high speeds. MailerQ is based on RabbitMQ AMQP. Commercial Linux No features added Add a feature
0 Like BulkMTA Good alternative? YES NO BulkMTA is Commercial Mail Server Similar to PowerMTA. IP Rotation, DKIM, Sender / Receiver Rate limiting Commercial Mac Windows Linux No features added Add a feature
