Mailcow

App in the BluixApps catalog

What it is

Mailcow is a complete self-hosted mail server stack — Postfix, Dovecot, Rspamd, SOGo webmail, ClamAV, all preconfigured and managed via web UI. Designed for users who want their own mail server without spending weeks tuning Postfix configs.

For self-hosters and small businesses running their own mail, Mailcow is the path of least resistance.

What it's for

  • Self-hosted email — full mail server (SMTP + IMAP + webmail)
  • Multi-domain hosting — host email for multiple owned domains
  • Mailbox management — create/manage user mailboxes via UI
  • Anti-spam + anti-virus — Rspamd + ClamAV integrated
  • CalDAV / CardDAV — SOGo for calendar + contacts sync

Who it's for

  • Privacy-conscious individuals running personal email
  • Small businesses wanting on-prem email vs Google Workspace
  • Agencies hosting email for clients
  • Tech enthusiasts self-hosting full personal infrastructure
  • Privacy-bound orgs under data residency mandates

Why teams pick Mailcow over alternatives

  • GPLv3 — fully open
  • Complete stack — Postfix + Dovecot + Rspamd + SOGo + ClamAV preconfigured
  • Web UI — manage everything visually
  • Multi-domain — host email for many domains in one instance
  • Active development — frequent releases
  • DKIM / SPF / DMARC — modern email auth built in

Integrations

  • Webmail — SOGo (full-featured) included
  • CalDAV / CardDAV — SOGo serves calendar + contacts
  • Mobile — IMAP / SMTP works with all native clients
  • Anti-spam — Rspamd with Bayesian filtering
  • Anti-virus — ClamAV scanning
  • Backup — supplied backup script
  • Two-factor auth — TOTP for webmail + admin

Notable users & community

  • 10k+ GitHub stars
  • Used by small businesses, agencies, privacy-conscious self-hosters
  • Active community on forums + Telegram
  • Backed by Servercow (DE) — sustainable European OSS company
  • Featured in self-hosted email guides

Tips & operations

  • Reverse DNS (PTR) record required — mail providers reject mail from servers without PTR
  • SPF + DKIM + DMARC — set up correctly or your mail goes to spam
  • Don't run on cheap VPS — many cloud providers block port 25; check before deploying
  • Backup all volumes — multiple data stores; use Mailcow's backup script
  • Bounce monitoring — set up logs / alerts for delivery failures
  • TLS only — SMTPS + IMAPS only; disable plain protocols

What we ship in BluixApps

  • Docker compose: Mailcow full stack (Postfix + Dovecot + Rspamd + SOGo + ClamAV + others)
  • Pinned mailcow:2024-11 (release-tagged)
  • HTTPS via Let's Encrypt for webmail + admin UI
  • Admin user via env config
  • DKIM + SPF + DMARC documented in install report
  • Persistent volumes for all mail data
  • Backup hook uses Mailcow's native backup script
Read this app's deep dive on bluix.app ↗

Get this app — pick a BluixApps plan

Same catalog. Scaling tenant isolation, white-label and support tier.

TierTenantsCatalogSupportWhite-labelMonthly
Stacks119 curated stacksStandard$19/moDetailDeploy
Starter10Full catalogStandard+$15–25/mo$49/moDetailDeploy
Pro25Full catalogPriority bugfix+$15–25/mo$149/moDetailDeploy
Growth100Full catalogPriority bugfix+$15–25/mo$349/moDetailDeploy
Scale500Full catalog7-day window+$15–25/mo$799/moDetailDeploy
EnterpriseUnlimitedFull catalogPriority 7-dayBundled$1,499/moDetailDeploy

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