E-mails showing one sender have information from another sender and the original senders message is lost.
In the past two weeks I've had 3 e-mails which showed one entity in the "From" with the message from another e-mail. The original senders message is completly lost.
ప్రత్యుత్తరాలన్నీ (2)
Try to rebuild the index file of the troubled folder. Right-click the folder - Properties - Repair Folder
You might want to read this article about maintaining your email so the corruption does not get worse and you lose all your mail. http://kb.mozillazine.org/Keep_it_working_-_Thunderbird