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Does Mattermost store data in Canada?
Mattermost (self-hosted or Mattermost Cloud)
If you host it yourself.
Mattermost can run on servers you choose. Data stays in Canada only if you host it in Canada. Where it is processed: Wherever you run it; US for Mattermost Cloud. It is owned by a US company, so the US CLOUD Act can require it to produce data it controls, wherever that data is stored.
Checked 2026-10-16 against the vendor's own pages.
The facts, claim by claim
- Where data is stored
- Self-hosted: wherever you run it. Mattermost Cloud "resides in the aws-us-east-1 region, located in Virginia, United States", including messages, user accounts and files
- Where it is processed
- Wherever you run it; US for Mattermost Cloud
- Support and backups
- Not stated on the pages read
- Owner
- Mattermost, Inc. (Palo Alto, CA) · Parent country: United States
- Servers run by
- Your own servers, a hosting partner, or Mattermost Cloud on AWS · US company
- Customer-held keys
- You hold the data when self-hosted
- Certifications
- Not recorded (blank means not checked, not none)
- Worth knowing
- Open source and self-hostable, so it can run on Canadian infrastructure. For data outside the US, Mattermost points to self-hosting or a hosting partner.
- Caveats
- Mattermost Cloud has one region (US). Ask a hosting partner who owns the data centre it runs on.
What the rules say about this
- US CLOUD Act: The owner is a US company: storing data in Canada does not take it out of reach of US legal process.
- Nova Scotia public bodies: Storage and access must both be in Canada: check support access and backups, not only storage.
- Québec Law 25: Canada is not Québec: storage in Toronto still needs a privacy impact assessment for Québec data.
- OCAP®: Self-hosting on Nation-controlled or Canadian-owned infrastructure is the route to possession.
Summaries only; each rule page links the law or regulator. Not legal advice. Before you sign with Mattermost, ask the 15 questions in the printable vendor questionnaire.
Canadian alternatives to Mattermost
Other team chat listings that are Canadian-owned, not US-owned, or self-hostable.
| Listing | Tier | Stored in Canada? | Owner | Servers run by |
|---|---|---|---|---|
| Element | Self-hosted: Run it yourself | If you host it yourself | United Kingdom | US company |
| Rocket.Chat | Self-hosted: Run it yourself | If you host it yourself | US | US company |
| Zulip | Self-hosted: Run it yourself | If you host it yourself | US | US company |
Sources
All checked 2026-10-16. Claims about storage and ownership rest on the vendor's own pages (or its parent's); supporting links can include regulators and program lists.
- Where the data is stored: https://docs.mattermost.com/administration-guide/manage/cloud-data-residency.html
- Who owns it: https://mattermost.com/about-us/
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