Hi all :).... thanks in advance for reading my issue. My partner is in Austria, she is not PC/tech competent (me neither to be clear!)... I have been helping with quick assist)...thunderbird suddenly blocked sending messages and refused to accept the password (it works elsewhere and is correct)... first issue seemed to think we are spammers. somehow we got round that but now sending just hangs and does not complete. She has hundreds and hundreds of emails in message pane and in a long list of folders. Her provider is BT mail (IMAP/SMTP). Send & receive via gmail on the same laptop works ok. She has painstakingly set up thunderbird to work in a way she can understand and she prefers it to BT webmail (which also works ok - send/receive). Saved passwords in Thunderbird are correct and we triple checked all the account & server settings and even tried variants/ports etc) Question: if we delete the thunderbird from the laptop (uninstall in programmes and features) and redownload from mozilla... will the messages and folders repopulate by default or when a new email server is added..... i seem to remember that somehow the new download sort of remembers the old programme (we tried something like that in the past).... her stache of folders and messages is critical. windows 10 and Bitdefender antivirus. Any thoughts or guidance much appreciated regards steve