Guides
Regions
Two regions, one account each
The United States deployment is https://flockstack.io and the European Union one is https://eu.flockstack.io. They run the same code. The sign-up and sign-in pages ask where your data should live, and start on the European Union for visitors from the EU, the other EEA countries, the UK and Switzerland.
An account lives in exactly one region. Signing in, API keys, passkeys and connected apps work at that region's address only, and FlockStack doesn't look an account up in the other region or move one between them. To use both, create an account in each. API keys start with mc_ in the United States and mc_eu_ in the European Union.
Where each kind of data is stored
| Data | United States | European Union |
|---|---|---|
| Your account, newsletters, contacts, campaigns, issues, sending history, API key hashes and sessions | A Cloudflare D1 database. Cloudflare chooses where it runs. | A Cloudflare D1 database with the EU jurisdiction, which keeps its data in the EU. |
| Pictures you upload, which your issues and websites show | A public Cloudflare R2 bucket, served by Cloudflare's network. | A public Cloudflare R2 bucket with the EU jurisdiction, served by Cloudflare's network. |
| Product files you sell, and your account exports | Private Cloudflare R2 buckets. Files leave them only through a signed, expiring link. | Private Cloudflare R2 buckets with the EU jurisdiction. Files leave them only through a signed, expiring link. |
| Sending: each email's recipient and content, and FlockStack's own sign-in codes | Amazon SES in the region set for the server (us-east-1). | Amazon SES in eu-west-1 (Ireland). |
| Background jobs: sending batches, schedules and exports | Upstash QStash in its US region. Jobs carry IDs and counts, not email content. | Upstash QStash in its EU region. Jobs carry IDs and counts, not email content. |
| Your FlockStack plan and its payments | Polar or Stripe, whichever bills the plan. One account serves both regions. | Polar or Stripe, whichever bills the plan. One account serves both regions. |
| What you sell to readers | Your own Stripe account, which you connect. FlockStack takes no cut. | Your own Stripe account, which you connect. FlockStack takes no cut. |
| Logs | Cloudflare's Workers logs. | Cloudflare's Workers logs, which aren't limited to the EU. |
What isn't kept in the region
Your data is stored in the region you chose. These are the places it, or what describes it, goes beyond it. That is why this page says stored in the European Union and not more.
- Where the code runs. A request is handled by the Cloudflare data center closest to the visitor, which can be outside the region. Nothing is stored there, but the request passes through it.
- Pictures in Cloudflare's cache. A public picture is cached near the readers who load it, wherever they are.
- Email in transit. Mail goes to the recipients' own servers, wherever those are.
- Billing. Polar and Stripe hold your name, email address and payment details under their own terms. The region's database keeps their customer and subscription IDs and your plan's status.
- Logs. Cloudflare keeps the Workers logs. They hold request details and FlockStack's own log lines: errors, IDs and event types, and a line for each sign-in with the email address, IP address and browser.
- Alerts to the FlockStack team. They name account IDs and never email content. They go by email, and to Telegram when it is set up.
- Google, when you sign in with it.