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Head-to-head · Mail Server Software

mailcow vs HCL Domino

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score mailcow #7 in Mail Server Software 8.5/10 Free plan Free plan✓ 0 of 5 features Visit mailcow
HCL Domino #8 in Mail Server Software 8.4/10 Pricing on request ✓ 5 of 5 features Visit HCL Domino

mailcow leads on 0 checks, HCL Domino on 0, and 6 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoremailcow · 8.5/10
  • Free planonly mailcow
  • Most featuresHCL Domino · 5 of 5

mailcow scores higher on our rubric for mail server software: 8.5 against 8.4 out of 10; our editors rank them #7 and #8.

mailcow is the better fit for docker-based mail and groupware deployments. HCL Domino is the better fit for enterprise mail with Domino application integration.

  • mailcow fits best

    Docker-based mail and groupware deployments

  • HCL Domino fits best

    Enterprise mail with Domino application integration

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature mailcow 8.5/10 Visit ↗ HCL Domino 8.4/10 Visit ↗
At a glance
Editor score 8.5 8.4
Ranking #7 in Mail Server Software #8 in Mail Server Software
Best for Docker-based mail and groupware deployments Enterprise mail with Domino application integration
Pricing model Free Paid
Starting price Free plan Pricing on request
Free plan ✓ (best) Not checked yet
Free trial — —
Deployment Self-hosted, Cloud Self-hosted
Platforms Web, Linux Web, Windows, Linux, iOS, Android
Support Community, Docs, Email Community, Docs
Integrations 5 integrations 7 integrations
Built for Solo, Small business, Mid-market, Enterprise Mid-market, Enterprise
Features mailcow 0/5 · HCL Domino 5/5
Webmail interface Not checked yet ✓ (best)
IMAP/POP3 access Not checked yet ✓ (best)
Mobile sync Not checked yet ✓ (best)
Antispam tools Not checked yet ✓ (best)
High availability Not checked yet ✓ (best)
Specs
License model Not checked yet Subscription
Mailbox limit Not checked yet Not checked yet
Our review
Pros
  • Includes Dovecot, SOGo, Rspamd, ClamAV and MariaDB components
  • Supports TOTP, YubiKey OTP and WebAuthn two-factor authentication
  • Provides mailbox migration tools and configurable message limits
  • Clustered mail servers support replicated databases and routing failover.
  • Filtering, quarantine, SPF, DKIM, scanning, and encryption support mail controls.
  • Web, mobile, Outlook, and REST access cover diverse enterprise workflows.
Cons
  • Requires self-hosted infrastructure and administrator-managed operations
  • Its platform model is limited to self-hosted deployments
  • The component-rich stack requires familiarity with mail infrastructure
  • Quote-based procurement requires contacting HCLSoftware or a business partner.
  • The platform may be broader than needed for mail-only deployments.
  • Domino-specific administration may not suit teams seeking a narrow mail service.
Our verdict

mailcow: dockerized is an open-source email and groupware suite packaged with Docker. It is intended for individuals, small businesses and organizations that want to manage their own email infrastructure rather than subscribe to a…

Read the review →

HCL Domino combines organizational messaging, application hosting, workflow support, and collaboration in an enterprise server platform. It supports SMTP, IMAP, POP3, MIME, and Notes-based mail routing and access, with clients including…

Read the review →
  1. mailcowMail Server Software 8.5Free plan
  2. HCL DominoMail Server Software 8.4Pricing on request

Strengths and trade-offs

  • mailcow — where it wins

    • Includes Dovecot, SOGo, Rspamd, ClamAV and MariaDB components
    • Supports TOTP, YubiKey OTP and WebAuthn two-factor authentication
    • Provides mailbox migration tools and configurable message limits

    Where it doesn't

    • Requires self-hosted infrastructure and administrator-managed operations
    • Its platform model is limited to self-hosted deployments
    • The component-rich stack requires familiarity with mail infrastructure

  • HCL Domino — where it wins

    • Clustered mail servers support replicated databases and routing failover.
    • Filtering, quarantine, SPF, DKIM, scanning, and encryption support mail controls.
    • Web, mobile, Outlook, and REST access cover diverse enterprise workflows.

    Where it doesn't

    • Quote-based procurement requires contacting HCLSoftware or a business partner.
    • The platform may be broader than needed for mail-only deployments.
    • Domino-specific administration may not suit teams seeking a narrow mail service.

More comparisons

All mail server software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update