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Failure to add an email account to Thunderbird

David Tradgett

I am trying to add a posteo email account to my thunderbird app on my phone and on my laptop. Each time when I get to inputting my user name and password I get an authentication error.

I am trying to add a posteo email account to my thunderbird app on my phone and on my laptop. Each time when I get to inputting my user name and password I get an authentication error.
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All Replies (1)

Posteo requires an "app password", which is distinct from your regular password. See the following articles:

How do I set up Posteo in an email client? (POP3, IMAP and SMTP)

https://posteo.de/en/help/how-do-i-set-up-posteo-in-an-email-client-pop3-imap-and-smtp

and

What are app passwords and how do I use them?

https://posteo.de/en/help/app-passwords

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