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iRedMail

Free plan APILinuxSelf-hostedWeb

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iRedMail's own site

Plans

PlanBilled and limitsPrice
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 a year
Enterprise Edition — per serverPerpetual license; annual renewal fee is $400 · Unlimited mailboxes · One server$1,000 a year
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 a year
iRedMail Enterprise Edition — per server$1000 / server / year; annual renewal fee: $400 · Unlimited mailboxes, mail domains, and mailing lists · one server$1,000 a year

As iredmail.org lists them, read 20 Sept 2026. The maker's own page has the final word.

Facts from iRedMail's own pages

Administration
Its web interface supports domain-level administrators, user self-service, message throttling, and account search. · iredmail.org, 9 Oct 2026
API
The Enterprise Edition comparison lists a RESTful API embedded in its executable program. · iredmail.org, 9 Oct 2026
Calendars and contacts
SOGo provides CalDAV calendars, CardDAV contacts, tasks, and ActiveSync services. · iredmail.org, 9 Oct 2026
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. · iredmail.org, 9 Oct 2026
Deployment
The Enterprise Edition is an on-premises product that keeps data on the user's own server. · iredmail.org, 9 Oct 2026
Directory integration
Enterprise Edition can replicate user and group accounts from Microsoft Active Directory as mail accounts. · iredmail.org, 9 Oct 2026
Enterprise security controls
Enterprise Edition includes TOTP two-factor authentication, firewall rule management, DKIM key management, and admin activity logging. · iredmail.org, 9 Oct 2026
Founded
2007 · iredmail.org, 28 Sept 2026
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. · iredmail.org, 9 Oct 2026
Purpose
iRedMail is open-source software for deploying a full-featured mail server. · iredmail.org, 9 Oct 2026
Spam and antivirus
Listed protections include SpamAssassin, ClamAV, SPF, DKIM, greylisting, allow and block lists, and SQL spam quarantine. · iredmail.org, 9 Oct 2026
Storage backends
The product lists OpenLDAP, MySQL, MariaDB, and PostgreSQL as account storage backends. · iredmail.org, 9 Oct 2026
Support
Enterprise Edition pricing includes technical support; general technical questions and issues can also be posted to the online forum. · iredmail.org, 9 Oct 2026
Supported systems
The downloadable installer lists CentOS Stream, Rocky Linux, AlmaLinux, Debian, Ubuntu, FreeBSD, and OpenBSD support. · iredmail.org, 9 Oct 2026
Webmail
Users can manage mail, folders, sieve filters, and vacation settings through Roundcube webmail or SOGo groupware. · iredmail.org, 9 Oct 2026
Who it serves
The product is presented for people and organizations that want to deploy and manage their own mail server on Linux or BSD. · iredmail.org, 9 Oct 2026

Where iRedMail stands on Freedom251

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