Allowing T-Bird and Google to unilaterally decide to permanently delete our email messages from Gmail's servers.
Why does T-Bird want us to change our account permission(s), so as to allow T-Bird to access our Google email account(s)? This will allow T-Bird to read, compose, send and permanently delete all of our email from Gmail! By clicking Allow, we would allow the T-Bird app and Google to use their information in accordance with their respective privacy policies. Deny_______ Allow________ Why should we allow T-Bird to permanently delete all our email from Google’s server, and with what justification would T-Bird delete our email messages?
Alla svar (1)
If you intend to use Thunderbird to manage (delete, among other actions) messages in your Gmail account, then Thunderbird will need permission to access and delete or perform other actions on them. Without those permissions, then you might as well forget about using Thundebird (or any other email client) to access and manage your Gmail account. What you're seeing is a result of this https://support.mozilla.org/en-US/kb/automatic-conversion-google-mail-accounts-oauth20, but even before this, you've always allowed (and in a much insecure manner for that matter) Thunderbird to delete your messages by configuring it to sign in to your Gmail account.