Slack vs Mattermost (2026): Head-to-Head Comparison
Slack is better for: Engineering and product teams who want deep tool integrations.
Mattermost is better for: different team types and use cases — see full comparison below.
Pricing Comparison
| Tier | Slack | Mattermost |
|---|---|---|
| Free | Free (90-day message history) | — |
| Pro | $7.25/user/month (annual) | — |
| Business+ | $12.50/user/month (annual) | — |
| Enterprise Grid | Custom pricing | — |
Slack: Pros & Cons
Pros
- Best-in-class app integrations (2,600+ apps)
- Threaded conversations keep channels clean
- Huddles for lightweight audio calls
- Excellent search across message history
Cons
- Can become distracting if not managed with notification settings
- Free tier restricts to 90-day message history
- More expensive than Microsoft Teams for large teams
When to Choose Slack
Choose Slack if: Engineering and product teams who want deep tool integrations.
Consider Mattermost if: your team has different priorities or you're already invested in a different ecosystem.
Frequently Asked Questions
Is Slack or Mattermost better?
It depends on your use case. Slack is better for engineering and product teams who want deep tool integrations. Mattermost suits different requirements — compare features above.
How does Slack pricing compare to Mattermost?
Slack starts at Free (90-day message history). Compare Mattermost pricing on their website.
Can I switch from Mattermost to Slack?
Yes — most team communication tools offer data import/export. Check both tools' migration guides.
Compare Slack against all major alternatives.
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