Mail-in-a-box Alternatives

Mail-in-a-box is described as 'Easy-to-deploy mail server' and is a Mail Server in the security & privacy category. There are more than 10 alternatives to Mail-in-a-box for a variety of platforms, including Linux, Self-Hosted, Mac, BSD and Docker apps. The best Mail-in-a-box alternative is mailcow: dockerized, which is both free and Open Source. Other great apps like Mail-in-a-box are Cloudron, Postfix, hMail Server and iRedMail.

Mail-in-a-box iconMail-in-a-box
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Easy-to-deploy mail server.

More about Mail-in-a-box
More about Mail-in-a-box
Mail-in-a-box alternatives page was last updated Mar 6, 2025
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  1. Courier-MTA icon

    Courier-MTA

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    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.

    License model

    • Free • Open Source

    Application type

    Platforms

    • Mac
    • Linux
    • BSD
    • Self-Hosted

    Courier-MTA Features

    1.  Mail Filtering
    2.  SMTP Support
    3.  IMAP Support

    Courier-MTA VS Mail-in-a-box

     
  2. WildDuck icon

    WildDuck

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    WildDuck is a scalable no-SPOF IMAP/POP3 mail server. WildDuck uses a distributed database (sharded + replicated MongoDB) as a backend for storing all data, including emails.

    License model

    • Free • Open Source

    Application type

    Platforms

    • Self-Hosted
    WildDuck screenshot 1

    WildDuck Features

    1.  POP3 Support
    2.  IMAP Support
    3. Docker icon  Support for Docker

    WildDuck VS Mail-in-a-box

     
  4. Qmail icon

    Qmail

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    QMail MTA.

    License model

    • Free • Proprietary

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Linux
    • BSD
    • FreeBSD
    • Debian
    • Ubuntu
    • Slackware

    Properties

    1.  Privacy focused

    Features

    1.  No Tracking
    2.  Support for Aliases
    3.  Ad-free
    4.  Real time collaboration

    Qmail VS Mail-in-a-box

     
  5. E-MailRelay icon

    E-MailRelay

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    A lightweight mail server with SMTP and POP3 support. It mainly used as store-and-forward mail server with POP access to spooled messages or it can be used as a personal internet mail server.

    License model

    • Free • Open Source

    Application type

    Platforms

    • Windows
    • Linux
    Usage scheme

    Properties

    1.  Privacy focused

    Features

    1.  No Tracking
    2.  Support for Aliases
    3.  Ad-free
    4.  Multiple Account support
    5.  POP3 Support
    6.  SMTP Support
    7.  Email automation

    E-MailRelay VS Mail-in-a-box

     
  6. Mox icon

    Mox

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    Mox is a modern full-featured open source secure mail server for low-maintenance self-hosted email.

    License model

    • Free • Open Source

    Application type

    Platforms

    • Self-Hosted
    • Docker
    Mox screenshot 1

    Properties

    1.  Privacy focused

    Features

    1.  Spam Filter
    2.  No Tracking
    3.  Ad-free
    4.  Support for TLS
    5.  DNSSEC
    6.  SMTP Support
    7.  IMAP Support

    Mox VS Mail-in-a-box

     
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