mailcow
mailcow.email
Spec sheet
- Product
- mailcow: dockerized is an open-source groupware and email suite based on Docker.Read 11 Oct 2026 · docs.mailcow.email
- Audience
- Servercow describes shared mailcow as suited to private users or small businesses with low email volume.Read 11 Oct 2026 · servercow.de
- Integrations
- The documentation lists client setup guides for Android, Apple macOS/iOS, eM Client, KDE Kontact, Outlook, and Thunderbird.Read 11 Oct 2026 · docs.mailcow.email
- Security
- Two-factor authentication options include YubiKey OTP, WebAuthn, and TOTP.Read 11 Oct 2026 · docs.mailcow.email
- Support
- Commercial support is available through Servercow, while community support is voluntary, best-effort, and not guaranteed.Read 11 Oct 2026 · docs.mailcow.email
- Headquarters
- Willich, GermanyRead 28 Sep 2026 · mailcow.email
- Administration
- The mailcow web interface lets administrators create domains and email addresses and manage most settings.Read 11 Oct 2026 · docs.mailcow.email
- Community integrations
- The docs list community-managed integrations including Nextcloud, Mailman 3, Portainer, Roundcube, CheckMK, and a Prometheus exporter.Read 11 Oct 2026 · docs.mailcow.email
- Data storage
- Mail is compressed and encrypted, and the encryption key pair is stored in the crypt-vol-1 Docker volume, which the documentation says to back up.Read 11 Oct 2026 · docs.mailcow.email
- Email transport security
- mailcow supports managing MTA-STS policies through its UI and documents DANE/TLSA support in its Postfix TLS policy component.Read 11 Oct 2026 · docs.mailcow.email
- Mail authentication
- The UI supports generating DKIM and ARC, managing per-domain and per-user blacklists and whitelists, and setting spam scores.Read 11 Oct 2026 · docs.mailcow.email
- Mail services
- Its components include Postfix for mail transfer, Dovecot for IMAP/POP, and SOGo for webmail, calendars, and contacts.Read 11 Oct 2026 · docs.mailcow.email
- Platform limits
- The documentation says not to install on NAS devices such as Synology or QNAP, OpenVZ, LXC, or other container platforms.Read 11 Oct 2026 · docs.mailcow.email
- Requirements
- The documented minimum is 1 GHz CPU, 6 GiB RAM plus 1 GiB swap, and 20 GiB disk excluding email storage; x86_64 and ARM64 are listed architectures.Read 11 Oct 2026 · docs.mailcow.email
- Spam and malware
- The suite includes Rspamd spam filtering and supports optional ClamAV antivirus scanning, including Office document macro scanning.Read 11 Oct 2026 · docs.mailcow.email
Plans and prices
mailcow: dockerized Free Open-source groupware and email suite; self-hosted with Docker Read 11 Oct 2026 · docs.mailcow.email
shared mailcow €8.90 a month ab 8,90€ pro Monat 1 domain · 20 mailboxes · up to 50 GB · unlimited aliases and domain aliases · shared resources Read 11 Oct 2026 · servercow.de
Ticket Support (Level 1) €45.90 a month 45,90€ pro Monat 3 tickets per quarter · no phone or remote support · max. 1 day response time Read 11 Oct 2026 · servercow.de
managed mailcow €54.90 a month ab 54,90€ pro Monat Unlimited domains and mailboxes, subject to system resources · up to 500 GB · dedicated server · up to 35 ActiveSync devices included Read 11 Oct 2026 · servercow.de
Telefon Support (Level 2) €105.90 a month 105,90€ pro Monat 3 tickets per quarter · 30 minutes phone support per quarter · no remote support · max. 6 hours response time Read 11 Oct 2026 · servercow.de
Remote Support (Level 3) €165.90 a month 165,90€ pro Monat 5 tickets per quarter · 30 minutes phone or remote support per quarter · max. 4 hours response time Read 11 Oct 2026 · servercow.de
Notfall Support (Level 4) €430, paid once 430,00€ je Buchung (einmalig) 120 minutes phone support · 120 minutes remote support · max. 2 hours response time Read 11 Oct 2026 · servercow.de
Where Specifiction places it
- Mail Server Software#3 of 348.4
