Sendmail AlternativesMail Servers and other similar apps like Sendmail
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, Self-Hosted, Windows, Mac and BSD apps. The best Sendmail alternative is Mail-in-a-box, which is both free and Open Source. Other great apps like Sendmail are Postfix, Zimbra Collaboration Suite, Zentyal and Microsoft Exchange.
- Mail Server
- Free • Open Source
License model
- Free • Open Source
Application type
Country of Origin
United States
Platforms
- Self-Hosted
- Roundcube
- 26 Postfix alternatives
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 Features
- 44 Zimbra Collaboration Suite alternatives
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.
License model
- Freemium • Open Source
Application types
Country of Origin
United States
Platforms
- Linux
- Online
- Self-Hosted
Zimbra Collaboration Suite Features
- 26 Zentyal alternatives
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.
License model
- Paid • Open Source
Application types
Country of Origin
Spain
EU
Platforms
- Linux
Zentyal Features
- 43 Microsoft Exchange alternatives
Exchange business-class email helps increase user productivity while protecting your data. Get it as a hosted service or run it on your servers.
License model
- Paid • Proprietary
Application type
Country of Origin
United States
Platforms
- Windows
- Online
- Self-Hosted
- Microsoft Office 365
Microsoft Exchange Features
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 full access to change the behaviour of the server.
License model
- Free • Open Source
Country of Origin
- International
Platforms
- Self-Hosted
- Node.JS
Haraka Features
- 18 Exim alternatives
Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.
License model
- Free • Open Source
Application type
Country of Origin
- International
Platforms
- Mac
- Linux
Exim Features
Real-time email, chat, audio/video calls & conferences, file-sharing, and contacts app with a modern and intuitive UI.
License model
- Paid • Proprietary
Application types
Country of Origin
Bosnia & Herzegovina
Platforms
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
CrossBox Features
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.
License model
- Free • Open Source
Platforms
- Linux
- BSD
- Self-Hosted
OpenSMTPD 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.
License model
- Free • Open Source
Platforms
- Linux
DiscontinuedThe last update was in 2013.
sSMTP Features
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
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.
License model
- Free • Open Source
Platforms
- Linux
- BSD
Dragonfly Mail Agent Features