Please provide more information, such as screenshots of incoming server settings pane, plus full error message.

The problem might be that the password required for TB is not the same as the one used to log into webmail or the swisscom website. Some providers require a separate password to access mail accounts through 3rd-party apps like TB.

https://www.swisscom.ch/en/residential/help/e-mail/setup.html

thanks for your messsages

there is no need for a screenshot since it only says: imap are not accepted + password does not work

at swisscom, i'v got only one password for both the account AND the email

it still does not work: - is the problem at swisscom, with mozilla - is the problem at mozilla with the imap links ?

Please share more detail. I just created a test account there and was successful. Naturally, it failed on password, but the account is there and showing error message about imap.

> I just created a test account there and was successful

with bluewin?!

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here are the screenshots (#2 then #1):

Do not include password there. All you want there is to validate the server setup. Wait until prompted for password.