Start with the right service
Tutanota is now called Tuta. Its encrypted mailbox does not support ordinary third-party IMAP, POP3 or SMTP clients. Repeatedly trying different Outlook server names will not enable an unsupported connection.
Configuration quick reference
| Reference | What to check |
|---|---|
| Connection and access | Ordinary IMAP/POP3/SMTP is not supported. Use Tuta’s own web, desktop or mobile applications. |
| Account authority | Use the original provider for identity verification, account recovery, eligibility and billing. |
Official reference: Tuta support. Check the provider’s current instructions before changing settings. Reviewed October 14, 2026.
Work through the problem
- Open the official Tuta web client or a supported Tuta application.
- If sign-in fails, use Tuta’s own recovery process and protect your recovery information.
- Update the official app and compare its behavior with the web client.
- If you were trying to add Tuta to another email client, switch to a supported Tuta client rather than entering invented server settings.
Keep a useful diagnostic record
Note the exact error, the application and version, and whether the same account works on the provider’s website. Record whether sending, receiving or sign-in fails. Remove private message content from screenshots before sharing them.
If you use POP or local folders, preserve those messages before removing an account. A new account configuration may not recover data stored only on the old device.
Choose your next step
For an app-only problem, compare authorization and settings with the official reference above. For an account restriction or failed identity check, continue with the original provider. Independent assistance cannot bypass these controls.
Related guides: IMAP, POP and SMTP · Password recovery · Email synchronization.