I woke up this morning and opened up Thunderbird and it gave me the "Welcome to Thunderbird 38.0" tab. I didn't think much about this until I noticed that none of my local saved email folders were showing in the folders bar. Then I noticed that one of my email accounts was also missing. I've looked online and all of the solutions seem to assume that the email files (folders?) are still on my computer, just not linked in my profile. The problem is- I can't seem to find any reference to any of them in any Thunderbird folder in my Users folder. My C:/Users/AppData/Roaming/Thunderbird/Profiles folder has a .default folder and in the folder is a prefs.js file that when I open it in Notepad, seems to be pretty complete- except there is no mention of my 2nd email account and no reference I can find to any of the folders I have been saving archived email in. All of the help I can search out seems to make the assumption that the mail folders are still stored somewhere on my computer. I have no idea what to look for, but I can't see anything that looks like it would contain these mail files/folders. The folders were there and accessible yesterday afternoon. I know this because I archived a bunch of email from my Inbox to the folders. I am running Windows 8.1 Pro (64 bit)