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Head-to-head · Mailing List Management Software

Mailman vs Groups.io

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Mailman #4 in Mailing List Management Software 8.6/10 Free plan Free plan✓ 0 of 5 features Visit Mailman
Groups.io #5 in Mailing List Management Software 8.5/10 Free plan · 30-day trial Free plan✓ 4 of 5 features Visit Groups.io

Mailman leads on 0 checks, Groups.io on 4, and 2 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 scoreMailman · 8.6/10
  • Free planboth
  • Most featuresGroups.io · 4 of 5

Mailman scores higher on our rubric for mailing list management software: 8.6 against 8.5 out of 10; our editors rank them #4 and #5.

Groups.io offers moderation controls; Mailman doesn't publish it. Groups.io offers subscriber preferences; Mailman doesn't publish it. Groups.io offers message archives; Mailman doesn't publish it. Groups.io offers signup forms; Mailman doesn't publish it.

Mailman is the better fit for teams needing established, self-hosted list administration. Groups.io is the better fit for groups needing hosted lists with member collaboration.

  • Mailman fits best

    Teams needing established, self-hosted list administration

  • Groups.io fits best

    Groups needing hosted lists with member collaboration

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. How we rank.

Side by side

Feature Mailman 8.6/10 Visit ↗ Groups.io 8.5/10 Visit ↗
At a glance
Editor score 8.6 8.5
Ranking #4 in Mailing List Management Software #5 in Mailing List Management Software
Best for Teams needing established, self-hosted list administration Groups needing hosted lists with member collaboration
Pricing model Free Free plan + paid
Starting price Not published Not published
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted Cloud, Mobile
Platforms Web, Linux, macOS Web, iOS, Android
Support Community, Docs Email, Docs
Integrations 4 integrations 5 integrations
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Mailman 0/5 · Groups.io 4/5
Moderation controls Not published ✓ (best)
Subscriber preferences Not published ✓ (best)
Self-hosted option Not published —
Message archives Not published ✓ (best)
Signup forms Not published ✓ (best)
Specs
List modes Not published Both
Our review
Pros
  • Manages subscribers and mailing lists with a web-based administration interface
  • Includes web-based message archives, digest scheduling and email subscription commands
  • Offers an administrative REST API and integrates with four mail-transfer agents
  • Supports open, restricted, moderated, and announcement-only groups
  • Searchable message archives and member-managed delivery preferences
  • Paid plans add calendars, chat, polls, files, photos, and wikis
Cons
  • Self-hosted deployment requires teams to manage the software environment
  • Focused on list administration rather than broader campaign features
  • Support is through community resources and documentation
  • The product focuses on group communication rather than campaign marketing
  • Premium charges are member-based, with minimum monthly or annual charges
  • Enterprise billing details are not fully specified
Our verdict

Mailman is an open-source mailing list management system for organizations, communities and technical administrators. Its core purpose is administering lists and memberships, with web-based tools for administrators and archives for…

Read the review →

Groups.io is a hosted email-group and listserv service for communities, nonprofits, teams, and larger organizations that need shared discussion with moderator controls. Members can post by email or through a group website, while owners can…

Read the review →
  1. MailmanMailing List Management Software 8.6Free plan
  2. Groups.ioMailing List Management Software 8.5Free plan · 30-day trial

Strengths and trade-offs

  • Mailman — where it wins

    • Manages subscribers and mailing lists with a web-based administration interface
    • Includes web-based message archives, digest scheduling and email subscription commands
    • Offers an administrative REST API and integrates with four mail-transfer agents

    Where it doesn't

    • Self-hosted deployment requires teams to manage the software environment
    • Focused on list administration rather than broader campaign features
    • Support is through community resources and documentation

  • Groups.io — where it wins

    • Supports open, restricted, moderated, and announcement-only groups
    • Searchable message archives and member-managed delivery preferences
    • Paid plans add calendars, chat, polls, files, photos, and wikis

    Where it doesn't

    • The product focuses on group communication rather than campaign marketing
    • Premium charges are member-based, with minimum monthly or annual charges
    • Enterprise billing details are not fully specified

More comparisons

All mailing list management software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update