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Head-to-head · Mail Server Software

Zimbra Collaboration vs MailEnable

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Zimbra Collaboration #2 in Mail Server Software 9.1/10 Free plan Free plan✓ 0 of 5 features Visit Zimbra
MailEnable #5 in Mail Server Software 8.7/10 Free plan · 60-day trial Free planFree trial✓ 5 of 5 features Visit MailEnable

Zimbra Collaboration leads on 0 checks, MailEnable 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 scoreZimbra Collaboration · 9.1/10
  • Free planboth
  • Free trialonly MailEnable
  • Most featuresMailEnable · 5 of 5

Zimbra Collaboration scores higher on our rubric for mail server software: 9.1 against 8.7 out of 10; our editors rank them #2 and #5.

Zimbra Collaboration is the better fit for full-featured open-source collaboration mail. MailEnable is the better fit for windows mail with perpetual licensing.

  • Zimbra Collaboration fits best

    Full-featured open-source collaboration mail

  • MailEnable fits best

    Windows mail with perpetual licensing

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Side by side

Feature Zimbra Collaboration 9.1/10 Visit ↗ MailEnable 8.7/10 Visit ↗
At a glance
Editor score 9.1 8.7
Ranking #2 in Mail Server Software #5 in Mail Server Software
Best for Full-featured open-source collaboration mail Windows mail with perpetual licensing
Pricing model Free Free plan + paid
Starting price Free plan —
Free plan ✓ ✓
Free trial — 60 days
Deployment Cloud, Self-hosted, Desktop, Mobile Self-hosted
Platforms Web, Windows, macOS, Linux, iOS, Android Web, Windows
Support Email, Phone, Tickets, Community, Docs · 24/7 Tickets, Community, Docs · 24/7
Integrations 5 integrations 1 integrations
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Zimbra Collaboration 0/5 · MailEnable 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 Perpetual
Mailbox limit Not checked yet Not checked yet
Our review
Pros
  • Combines email, calendars, contacts, tasks, and file sharing
  • Supports IMAP, POP, SMTP, CalDAV, CardDAV, and ActiveSync
  • Includes migration, security, backup, and restore capabilities
  • Free Standard edition includes SMTP, POP3, IMAP and webmail
  • Unlimited domains and users in the Standard edition
  • Paid tiers add clustering, Outlook MAPI and advanced administration
Cons
  • Commercial licensing uses quote-based pricing
  • Hosted storage and attachment limits depend on the hosting provider
  • Its broad feature set may exceed basic email-only requirements
  • Runs on Microsoft Windows rather than multiple server platforms
  • Advanced capabilities require paid one-time licenses
  • Outlook MAPI integration is limited to Enterprise Premium
Our verdict

Zimbra Collaboration is an open-source email and collaboration suite from Synacor for businesses, educational institutions, service providers, and organizations that need control over deployment and data. It combines email, contacts,…

Read the review →

MailEnable is self-hosted mail server software for Microsoft Windows, aimed at individuals, small businesses, hosting providers and larger organizations. Its Standard Edition provides SMTP, POP3, IMAP and browser-based webmail, along with…

Read the review →
  1. Zimbra CollaborationMail Server Software 9.1Free plan
  2. MailEnableMail Server Software 8.7Free plan · 60-day trial

Strengths and trade-offs

  • Zimbra Collaboration — where it wins

    • Combines email, calendars, contacts, tasks, and file sharing
    • Supports IMAP, POP, SMTP, CalDAV, CardDAV, and ActiveSync
    • Includes migration, security, backup, and restore capabilities

    Where it doesn't

    • Commercial licensing uses quote-based pricing
    • Hosted storage and attachment limits depend on the hosting provider
    • Its broad feature set may exceed basic email-only requirements

  • MailEnable — where it wins

    • Free Standard edition includes SMTP, POP3, IMAP and webmail
    • Unlimited domains and users in the Standard edition
    • Paid tiers add clustering, Outlook MAPI and advanced administration

    Where it doesn't

    • Runs on Microsoft Windows rather than multiple server platforms
    • Advanced capabilities require paid one-time licenses
    • Outlook MAPI integration is limited to Enterprise Premium
  • Zimbra Collaboration9.1/10 · Free plan

    A broad open-source suite for organizations that need email, collaboration, and deployment control.

    Visit ZimbraFull verdict →
  • MailEnable8.7/10 · Free plan · 60-day trial

    A Windows-focused mail server with a free core edition and expandable paid tiers.

    Visit MailEnableFull verdict →

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