Alternatives to iRedMail

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

  • Mailcow

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

    FreeOpen sourceLinuxSelf-hosted

    Mailcow packages the mail stack in Docker with a web admin panel and SOGo webmail, making updates more manageable but needing more resources.

  • Mail-in-a-Box

    Turnkey open-source script that builds a full mail server on Ubuntu.

    FreeOpen sourceLinuxSelf-hosted

    Mail-in-a-Box automates a full mail server setup with a turnkey script, but is tied specifically to Ubuntu rather than various Linux and BSD systems.

  • Modoboa

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

    FreeOpen sourceLinuxSelf-hosted

    Modoboa provides a simplified web UI with admin and webmail for running mail hosting, backed by a smaller community.

  • Poste.io

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

    FreemiumProprietaryLinuxSelf-hosted

    Poste.io runs a full mail stack in a single Docker container with web admin, webmail and TLS, but is not open source and larger deployments need paid licensing.

  • Maddy

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

    FreeOpen sourceLinuxSelf-hosted

    Maddy replaces a multi-package stack with a single Go binary and composable configuration, with fewer guides than more established mail servers.

  • Stalwart

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

    FreeOpen sourceLinuxSelf-hosted

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

Similar software

Related functionality, not a direct replacement.