If you are setting up Thunderbird to use your Gmail account you may find that when Thunderbird opens a new window to a Google web portal into which you are to provide your email address and password that it will keep asking you over and over again for your email and never enable to you to enter the password.
This occurs when Thunderbird’s privacy settings do not allow it to store cookies.
First, ensure that your gmail account has Allow → Continue reading “[SOLVED] Unable to Sign-In to Gmail with Thunderbird with OAuth2, Keeps Asking for Email or Phone Over and Over”