iRedMail

iredmail.org · checked 9 Oct 2026

#6 · Email Server Software #9 · Mail Server Software

Visit iredmail.org ↗ Alternatives iRedMail vs Stalwart Mail Server

How it plugs in

YesPublic API

NoOpen source

YesFree tier

Signal on Email Server Software6.2#6 of 33

iRedMail is open-source software for deploying a full-featured mail server.

Pricing

Open Source EditionSelf-hosted mail server · Open-source components · Unlimited accountsOn request
Enterprise Edition — per mailboxPerpetual license; annual renewal fee is 40% of the initial purchase · Minimum 10 mailboxes · One server$10/yr
Enterprise Edition — per serverPerpetual license; annual renewal fee is $400 · Unlimited mailboxes · One server$1,000/yr
iRedMail Enterprise Edition — per mailbox$10 / mailbox / year; annual renewal fee: 40% of initial purchase · Minimum 10 mailboxes · unlimited mail domains and mailing lists · one server$10/yr
iRedMail Enterprise Edition — per server$1000 / server / year; annual renewal fee: $400 · Unlimited mailboxes, mail domains, and mailing lists · one server$1,000/yr

As iredmail.org lists them, checked 20 Sept 2026.

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Runs on

Web
Windows
Mac
Linux
iOS
Android

Facts

Website: iredmail.org
Price: Free tier · from $10/yr
Free trial: Yes
Administration: Its web interface supports domain-level administrators, user self-service, message throttling, and account search.
Calendars and contacts: SOGo provides CalDAV calendars, CardDAV contacts, tasks, and ActiveSync services.
Connection security: The site says mail services use TLS connections, webmail uses HTTPS, mail is encrypted in transit with TLS when possible, and passwords are stored in SSHA512 or BCRYPT.
Deployment: The Enterprise Edition is an on-premises product that keeps data on the user's own server.
Directory integration: Enterprise Edition can replicate user and group accounts from Microsoft Active Directory as mail accounts.
Enterprise security controls: Enterprise Edition includes TOTP two-factor authentication, firewall rule management, DKIM key management, and admin activity logging.
Founded: 2007
Free edition limit: The free shell-based installer requires administrators to follow upgrade tutorials and apply changes manually, while Enterprise Edition offers one-click upgrades.
Spam and antivirus: Listed protections include SpamAssassin, ClamAV, SPF, DKIM, greylisting, allow and block lists, and SQL spam quarantine.
Storage backends: The product lists OpenLDAP, MySQL, MariaDB, and PostgreSQL as account storage backends.
Support: Enterprise Edition pricing includes technical support; general technical questions and issues can also be posted to the online forum.
Supported systems: The downloadable installer lists CentOS Stream, Rocky Linux, AlmaLinux, Debian, Ubuntu, FreeBSD, and OpenBSD support.

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