I already had Mozilla thunderbird installed on my laptop and 4 email ID's were connected to it. Few days ago problem started with one of the mail id, it will ask for password every time I open thunderbird. It will not accept the password though it is correct, I tried to fix it by deleting the stored password etc but that didn't help. I installed Mozilla thunderbird again (I already had one installed earlier with 4 mail ids connected to it) and thought it will help. But there is no folder in this new installation, also all the folders disappeared from the previous installation too which had 4 mail ids connected and many folders were created by me. Please help me as I have lost all the emails. Another question: I have recently changed my email server from Bigrock to Yahoo mail, is it possible to retrieve the emails I had on bigrock server. Please help