Alternatives to Mail-in-a-Box

Turnkey open-source script that builds a full mail server on Ubuntu. The listings below can replace it for an important use case. Each note says what changes if you switch.

Replacements

Listings that take over the same core job as Mail-in-a-Box.

  • Mailcow

    Dockerized open-source mail server suite with web admin and webmail.

    FreeOpen sourceLinuxSelf-hosted

    Mailcow runs as a Docker suite with a web admin panel and SOGo webmail, and needs more resources than a single lightweight mail daemon.

  • iRedMail

    Free open-source mail server installer for Linux and BSD.

    FreeOpen sourceLinuxSelf-hosted

    iRedMail is a free open-source installer script that supports a broad range of Linux and BSD distributions instead of only Ubuntu, using a text-based installer.

  • Modoboa

    Open-source mail hosting platform with an admin UI and webmail.

    FreeOpen sourceLinuxSelf-hosted

    Modoboa is an open-source self-hosted mail platform with a simplified admin web UI and webmail, though its community is smaller than larger mail projects.

  • Poste.io

    All-in-one Docker mail server with web admin and built-in TLS.

    FreemiumProprietaryLinuxSelf-hosted

    Poste.io packs the mail stack into a single Docker container with web admin, webmail and TLS, but it is not open source and larger deployments need paid licensing.

  • Stalwart

    Rust-based all-in-one mail server supporting JMAP, IMAP, and SMTP.

    FreeOpen sourceLinuxSelf-hosted

    Stalwart is a Rust-based all-in-one mail server that adds JMAP alongside IMAP and SMTP, from a newer project with a smaller ecosystem.

  • Maddy

    Composable single-binary open-source mail server written in Go.

    FreeOpen sourceLinuxSelf-hosted

    Maddy is a single Go binary with a composable configuration model, simpler to install than a multi-package stack but with fewer guides available.

Similar software

Related functionality, not a direct replacement.