$0
Mattermost is free to self-host — vs $7.25–$15/user/month for Slack.
For a 50-person team that's a significant annual saving.
For a 50-person team that's a significant annual saving.
🗺️ Migration Steps
1
Mattermost provides an official Slack import script. Export your Slack workspace data, run the importer, and recreate your integrations using Mattermost's equivalent webhook and bot APIs.
2
Data sourced March 2026. Pricing and features change — verify at [Slack](https://slack.com) and [Mattermost](https://mattermost.com) before making decisions.*
🔗 Get Started
Want a full feature and pricing comparison before you switch?
Read the Full Slack vs Mattermost Comparison →