Even unticked folders seem to be downloading, not sure why, once I make sure the OK has taken (which is literally taking hours) I'm going to kill Thunderbird & restart it. I've tried to untick most if not all of the mail folders (menu Tools > Account Settings > Synchronisation & Storage > Advanced button, untick everything but Inbox & Sent, and even those if you want, then OK and OK again).īut even the process of unticking is proving to be a nightmare, with every untick taking 10 seconds or so to 'take'.Īnd it's still downloading the ticked emails… maybe I should have unticked them all, but there we go, I'm going to let it carry on trying to do its stuff for the rest of the day & see if it's faster after it's got everything downloaded for offline use. Talk about taking up computer memory and processing time. That means that the moment you open Thunderbird 3, it tries to download all your Gmail etc. Still trying to figure it out but as far as I can see, Thunderbird 3 defaults to trying to synchronise all email in all your folders from all your e-mail accounts - which is a bad idea and a half (this default is only meant to operate for newly added IMAP accounts, but in my case it's doing it for all my existing accounts). I've had terrible problems since trying yesterday to upgrade from Thunderbird 2, with Thunderbird 3 freezing, not responding, hanging, taking several seconds to respond to every click or keystroke.

If you are using the free open source Mozilla Thunderbird software for email, do not, repeat not, upgrade to the latest version i.e.

Mozilla thunderbird keeps freezing up