Sendmail Alternatives
Sendmail is described as 'general purpose internetwork email routing facility that supports many kinds of transfer and delivery methods, including the Simple Mail Transfer Protocol (SMTP) used for email transport over the Internet' and is a Mail Server in the online services category. There are more than 25 alternatives to Sendmail for a variety of platforms, including Linux, Windows, Self-Hosted, Mac and Web-based apps. The best Sendmail alternative is Zimbra Collaboration Suite, which is both free and Open Source. Other great apps like Sendmail are Zentyal, Mail-in-a-box, Postfix and Microsoft Exchange Server.
Sendmail alternatives are mainly Mail Servers but may also be WebMail Providers or Email Clients. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Sendmail.Zimbra Collaboration Suite
Is this is a good alternative?YesNo- Freemium • Open Source
- Mail Server
- Calendar App
- Team Collaboration Tool
41 Zimbra Collaboration Suite alternatives- Linux
- Online
- Self-Hosted
Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra boosts the productivity of users on any desktop and dramatically reduces TCO compared to legacy platform vendors.
- - Zimbra Collaboration Suite is the most popular Web-based, Linux & Self-Hosted alternative to Sendmail.
- - Zimbra Collaboration Suite is the most popular Open Source & free alternative to Sendmail.
Zimbra Collaboration Suite Features
Zentyal
Is this is a good alternative?YesNo27 Zentyal alternatives- Paid • Open Source
- Mail Server
- Linux Distro
- Linux
Zentyal is a native Microsoft Active Directory implementation on Linux incorporating all the network services required in a small and medium business environment: Directory & Domain Server, Mail Server, Gateway and Infrastructure Server.
- - Zentyal is the most popular commercial alternative to Sendmail.
Zentyal Features
Mail-in-a-box
Is this is a good alternative?YesNo13 Mail-in-a-box alternatives- Free • Open Source
- Mail Server
- Self-Hosted
- Roundcube
Easy-to-deploy mail server.
Mail-in-a-box Features
Postfix
Is this is a good alternative?YesNo24 Postfix alternatives- Free • Open Source
- Mail Server
- Mac
- Linux
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 its former names VMailer and IBM Secure Mailer.
- - Postfix is the most popular Mac alternative to Sendmail.
Opinions about Postfix as a Alternative to Sendmail
Microsoft Exchange Server
Is this is a good alternative?YesNo44 Microsoft Exchange Server alternatives- Paid • Proprietary
- Mail Server
- Windows
- Online
Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft. It is part of the Microsoft Servers line of server products and is widely used by enterprises using Microsoft infrastructure solutions.
- - Microsoft Exchange Server is the most popular Windows alternative to Sendmail.
Microsoft Exchange Server Features
OpenSMTPD
Is this is a good alternative?YesNo12 OpenSMTPD alternatives- Free • Open Source
- Linux
- BSD
- Self-Hosted
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.
OpenSMTPD Features
Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.
Exim Features
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. Unlike Exim4, sSMTP does not receive mail, expand aliases, or manage a queue.
sSMTP Features
DiscontinuedThe last update was in 2013.
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.
msmtp Features
Courier-MTA
Is this is a good alternative?YesNo- Free • Open Source
- Mail Server
11 Courier-MTA alternatives- Mac
- Linux
- BSD
- Self-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 provides ESMTP, IMAP, POP3, webmail, and mailing list services within a single, consistent, framework.
Courier-MTA Features
Atmail Email Server
Is this is a good alternative?YesNo- Paid • Proprietary
- WebMail Provider
- Email Client
- Mail Server
67 Atmail Email Server alternatives- Linux
- Online
Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.
Atmail Email Server Features
Dragonfly Mail Agent
Is this is a good alternative?YesNo7 Dragonfly Mail Agent alternatives- Free • Open Source
- Linux
- BSD
A small Mail Transport Agent (MTA), designed for home and office use. Part of DragonFly BSD , it accepts mails from locally installed Mail User Agents (MUA) and delivers the mails either locally or to a remote destination.
Dragonfly Mail Agent Features