1
No standard IMAP
Proton keeps mail end-to-end encrypted and does not offer plain IMAP or SMTP servers the way most providers do.
Help
Connecting Proton Mail: Why IMAP Is Different
Proton Mail cannot be added to Patriot Mail today, and it is worth explaining why so you do not spend time on settings that cannot work. Proton does not offer normal IMAP; it only exposes IMAP through Proton Mail Bridge, which runs on your own computer and needs a paid plan.
The short answer
Proton Bridge is local-only
2
Bridge runs on your device
The Bridge app decrypts locally and serves IMAP only to apps on the same computer, not to services on the internet.
3
Paid plan required
Proton Mail Bridge is available only on paid Proton plans, so even local desktop access is not free.
What works instead
Your options with Proton
1
Use Proton's own apps
Proton's web, mobile, and desktop apps are the supported way to read Proton Mail with its encryption intact.
2
Desktop client with Bridge
On a paid plan, Proton Mail Bridge lets a desktop app on the same computer (such as Apple Mail on a Mac) connect over localhost. That is a device-local setup, not Patriot Mail.
3
Add a different mailbox
Patriot Mail connects Gmail, Outlook, Yahoo, iCloud, and many IMAP providers. See the setup guides for those.
Related guides
Other resources
Tuta
Tuta is in the same boat as Proton for a different reason - it offers no IMAP at all. Here is what that means.
Read about TutaIMAP Configuration Guide
Server settings for the providers Patriot Mail does connect over IMAP.
Open IMAP GuideSupport
Contact the support team if you have questions.
Open Support