Element vs Mattermost

Detailed comparison to help you choose the right tool for your needs

E

Element

Secure messenger and collaboration app built on the Matrix protocol

4.1
Editorial Rating
M

Mattermost

Open source Slack alternative

4.3
Editorial Rating

Quick Comparison

Rating

4.1
vs
4.3

Starting Price

Free
vs
Free

Pricing Model

freemium
vs
freemium
Feature
Element
Mattermost
E2E encryption
Decentralized (Matrix)
Voice & video
Bridges to other platforms
Self-hosting
Spaces (group organization)
Team messaging
File sharing
Integrations
Open source
Mobile apps

Element Pros

  • Decentralized — no single point of failure
  • Government-grade encryption
  • Bridges to Slack, Discord, IRC, etc.
  • Full data sovereignty with self-hosting

Element Cons

  • Less polished UI than Slack/Teams
  • Matrix federation can be complex
  • Smaller app ecosystem

Mattermost Pros

  • Complete data sovereignty with self-hosted deployment
  • Open source with no vendor lock-in
  • Slack-like familiar interface
  • Air-gapped deployment possible for high-security orgs
  • Strong compliance and audit logging
  • Active community and development

Mattermost Cons

  • Self-hosting requires significant DevOps expertise
  • Mobile apps noticeably inferior to Slack/Teams
  • Smaller app ecosystem than commercial alternatives
  • Complex initial setup
  • Performance depends heavily on server resources

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