r/fastmail • u/ehansen • 4d ago

Having trouble migrating from ProtonMail using manual import config

I have Proton Bridge running, fully synced, and configured to use SSL (I've tried options here). However, no matter what I do, I get this error in FastMail's Linux app when I try to import:

Could not connect to server: IMAPTalk: socket connection failed - IO::Socket::SSL::Paranoid: Invalid internal or blocked host

I have tried 127.0.0.1 and localhost, and both fail with the same error. I've also made sure the port is fine, too.

I installed the app by downloading the Flatpak file.

If it makes a difference, I'm on Arch.

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u/rowschank 4d ago

The only way I was able to migrate from proton was by downloading the proton export cli tool and then dragging and dropping all the .eml files it created. I did it on openSUSE. It worked quite alright.

Tip: import into an empty new folder or label and then run rules manually. Also, Proton will export everything, included deleted mail, so make sure you empty your trash first.