Mattermost vs Notion: Complete Comparison (2026)

Why choose Mattermost

• Higher Scalability score (9/10 vs 6/10)
• Higher Security score (10/10 vs 8/10)
• Better fit for enterprise (9/10 vs 7/10)
• Better fit for developers (8/10 vs 6/10)

Why choose Notion

• Higher Analytics score (5/10 vs 3/10)
• Higher Cost score (6/10 vs 5/10)
• Better fit for freelancers (7/10 vs 2/10)
• Better fit for small business (8/10 vs 4/10)

Mattermost

Pros

• Can be fully self-hosted or air-gapped, which suits defense, government and regulated industries
• Enterprise tiers include strong compliance tooling: FIPS 140-3 builds, legal hold, compliance export and granular RBAC
• Playbooks give incident and DevOps teams repeatable checklists with automated triggers inside chat
• Built-in Jira, GitHub and GitLab integrations, plus an open API for custom bots
• Open-source core under MIT and AGPL licenses avoids full vendor lock-in

Cons

• The Boards kanban plugin is in maintenance mode and has been removed from the in-product marketplace
• Since v11 the free Entry plan shows only the last 10,000 messages and Team Edition is capped at 250 users, which drew community criticism
• The vendor publishes no prices, licenses are annual prepaid only, and every server needs its own license
• No Gantt charts, time tracking or project reporting, so it cannot replace a dedicated project management tool
• Self-hosting requires admin time and server upkeep

Notion

Pros

• Relational databases and nested pages let teams build their own trackers, wikis and project systems without a fixed workflow.
• Docs, knowledge base, calendar, forms and published sites are bundled in one workspace, which can replace several separate tools.
• Business includes AI agents, meeting notes and cross-app Enterprise Search without a separate per-seat AI add-on.
• Enterprise security covers SCIM, audit logs, SIEM and DLP connections, and zero data retention with AI providers.
• Strong review ratings, around 4.6 on G2 and 4.7 on Capterra.

Cons

• Reviewers repeatedly report slow loading and lag in large databases and workspaces.
• Offline support is weak and the mobile app does less than the desktop app.
• Plus includes only an AI trial, so teams that want working AI must pay for Business.
• Since late 2026, AI use beyond the monthly credit allowances pauses unless an admin buys extra credits, and some legacy discounted customers have reported large increases at renewal.
• Teams must design their own structure before it works well for project management, and new users describe the setup as unintuitive.