Currently I am using Thunderbird for two e-mail accounts, an imap account with my university and a pop account with my local utility company. The local utility is phasing out their support for e-mail and suggested customers migrate to gmail. I have created a gmail account and successfully added it to Thunderbird. I'm now trying to move my many years of messages from my pop account to my new gmail account by dragging them from one account to the other in Thunderbird. Many times when dragging folders, groups of messages, or even individual messages from my pop account to my new gmail account, nothing happens for quite sometime and then I get an error that the gmail imap server has timed out. Sometimes the moves work great but after a while I can't move anything. I close Thunderbird and come back later to find that I can move a few more things before timing out.