It is possible that everything is still there but Thunderbird is not pointing to the correct location, so appears blank. Profile folders are hidden folders. Make hidden folders and files visible: * http://kb.mozillazine.org/Show_hidden_files_and_folders Look to see if Profile folder is still there; info at this link to locate folders. If there is more than one Profile folder, check all profile names to see which has the mail accounts. * http://kb.mozillazine.org/Profile_folder_-_Thunderbird eg: C:\Users\user name\AppData\Roaming\Thunderbird\Profiles\Profile name\ then if Pop mail account look in 'Mail' folder for mail account name or if IMAP mail account 'IMAPMail' \ mail account name. If you can see this, make a note of where it is. Then in thunderbird, * 'Tools' > 'Account Settings' > 'Server Settings' for the mail account * Look at the bottom on the right side for 'Local Directory:' * click on 'Browse' button and locate the mail account name: eg: C:\Users\Username\AppData\Roaming\Thunderbird\Profiles\profile name\Mail\mail account name * then click on OK to save changes. * Close and reopen Thunderbird. Can you see the account and emails etc?