Thunderbird was deleted from my computer same time it was deleted on phone. On reinsttallation I find that sent mail does not get savedd AND they want my password for everymove, then they tell me it is invalid. When I had TB before, it was not necessaery to sign in or enter a password. If you can't eliminate this needing to enter it at every move, I

and fix the sent items being saved I will go to Outlook.  Thank you in advance for your help