Hi. My coworker is using Thunderbird, and two days ago, he suddenly lost all of the thousands of emails in his "Sent" folder only. I've tried deleting the .msf files, and right now, his computer is reindexing the global index. Neither of them seem to be working. I haven't yet tried to re-install the profile, namely because we don't want to lose any of the other emails.

The 'sent' folder has been working fine since 3/4 (yesterday) but it completely wiped itself out on March 3rd with no warning, and there's nothing in it before the fourth. He's using POP to store his emails on his computer.