What Sollo keeps,and what leaves.
Your mail stays on your computer. Your business data is kept on our servers in Switzerland. This page says what is stored where, how it is protected, and every place your data goes, so you can check it.
Mail, drafts, summaries and rules, and the mail behind anything you keep, are stored in one encrypted database and an encrypted file store on your computer.
The keys sit in your system keyring: Secret Service on Linux, the Keychain on macOS. Without that keyring entry, the data cannot be read, by design.
Your account, and the clients, projects, hours, invoices and calendars you create in Sollo, are stored on Eclypsys’s servers in Switzerland, encrypted at rest.
A contact or event kept from mail goes up without the mail: its link to the thread, its subject and its body stay on your computer. A copy of your business data stays on your computer too, so you can keep working offline; changes are sent when you reconnect.
Sollo connects to these places, and to nothing else:
Any account, or any task, can be set to local only. Then nothing from it goes to Claude. Sorting already runs locally; without a local model, Sollo sorts by headers and never falls back to the cloud on its own.
Sign-in codes, password resets and other security mail are kept from the companion and from notifications.
Claude Desktop or Cursor can work with your mail over MCP once you pair them in Settings. They go through the same approvals as Sollo, and Activity lists what they did.
Write to security@gosollo.ch. Please give us time to fix it before you publish.