Head-to-head · Messaging
Slack vs Element (Matrix)
Which one to pick in 2026 — comparing 🇺🇸 Slack with the European alternative 🇪🇺 Element (Matrix) on the things that actually decide who can read your data.
🇺🇸 Slackvs🇪🇺 Element (Matrix)
Verdict
Who has stronger privacy guarantees by law?
Element (Matrix) — GDPR-native and outside the US CLOUD Act / FISA 702 reach.
Which one encrypts your data end-to-end by default?
Element (Matrix) ships E2E encryption by default. Slack does not.
Which one tracks you for ads?
Element (Matrix) also tracks for ads — verify in the table.
Which one is open source?
Element (Matrix) is open source. Slack is proprietary.
Side-by-side
Slack vs Element (Matrix) — full comparison
Criteria
🇪🇺 Element (Matrix)
🇺🇸 Slack
Headquarters
London, United Kingdom
San Francisco, USA
Jurisdiction
UK / EU
USA
Data location
Self-hostable
US (EU residency paid tier)
GDPR-native
Yes
No
CLOUD Act / FISA exposed
No
Yes
Ad tracking
Yes
No
End-to-end encryption
Yes
No
Open source
Yes
No
Ownership
Element / Matrix.org
Salesforce
Founded
2014
2013
Make the switch
Try Element (Matrix) instead of Slack
Secure, decentralised team chat.