For Thunderbird to remember your password you'd need to check the corresponding box at the password prompt. For modern OAuth2 authentication Thunderbird does not remember your account password, but an OAuth authentication token instead. There is no point not to remember that, because you'd have to go through the authentication process every time you log on to your account.

sometimes I open thunderbird and cancel the request for it to download messages

When Thunderbird didn't remember your password, then obviously this will prevent you from getting new mail.

You may also want to set a primary password, which protects any remembered account passwords. https://support.mozilla.org/kb/protect-your-thunderbird-passwords-primary-password

For modern OAuth2 authentication Thunderbird does not remember your account password, but an OAuth authentication token instead. There is no point not to remember that, because you'd have to go through the authentication process every time you log on to your account.

sometimes I open thunderbird and cancel the request for it to download messages

When Thunderbird didn't remember your password, then obviously this will prevent you from getting new mail.

You may also want to set a primary password, which protects any remembered account passwords. https://support.mozilla.org/kb/protect-your-thunderbird-passwords-primary-password </blockquote>

that's just it I don't want Thunderbird to save my password, I will choose the time to download. I understand everything that you said, and that's not my problem! If I set thunderbird to not check for new mail at open, then when I'm ready to get new mail the "GET MAIL" button at the top left does not work, it does absolutely nothing.