The Best 18 EmailSuccess Alternatives

  • Zentyal icon

    Zentyal

    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...

    Free Open Source Linux

  • Postfix icon

    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 its former names VMailer and IBM Secure Mailer.

    Free Open Source Mac OS X Linux

  • hMail Server icon

    hMail Server

    hMailServer is a free e-mail server for Microsoft Windows. Its used by Internet service providers, companies, governments, schools and enthusiasts in all parts of the world.

    Free Open Source Windows

  • Microsoft Exchange Server icon

    Microsoft Exchange Server

    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.

    Commercial Windows Web

  • Exim icon

    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

  • Courier-MTA icon

    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.

    Free Open Source Mac OS X Linux BSD Self-Hosted

  • MailerQ icon

    MailerQ

    MailerQ is a high performance Mail Transfer Agent (MTA) and a very fast SMTP server, designed to deliver large volumes of email messages at very high speeds. MailerQ is...

    Commercial Linux

  • Sendmail icon

    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 (SMTP) used for email transport over the Internet.

    Free Open Source Mac OS X Linux

  • iMail icon

    iMail

    Fast, safe, heavy mail solution. Web-client access, LAN or WAN self-hosted server, maintenance-free design. No Windows server and database server required, unlimited mail accounts, storage, attachment size, custom logo.

    Free Windows Self-Hosted

  • SmarterMail Mail Server icon

    SmarterMail Mail Server

    SmarterMail delivers Exchange-level email server software features for a fraction of the cost. With lower hardware requirements, superior stability and reduced...

    Freemium Windows

  • PowerMTA icon

    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

  • Xeams icon

    Xeams

    Xeams is a secure & powerful mail server for Windows, Linux, Solaris, MacOSX and other flavors or UNIX, which supports SMTP, POP3, and IMAP. It includes a powerful...

    Free Personal Mac OS X Windows Linux BSD

  • ArgoSoft Mail Server icon

    ArgoSoft Mail Server

    Powerful and simple SMTP/POP3/Finger server, with built in Web interface for accessing mail via Web browser. Supports security features, such as SMTP authentication. Has...

    Freemium Windows