Finding all your unlabeled Gmail messages can be a chore. If you find yourself wanting to do that regularly, here’s how to build a bookmark for your link bar so you can have single-click access to all Gmail messages without a label.
Thunderbird Hangs Up When Accessing Gmail IMAP — Rebuild Index
Arrgghh! You try to access an IMAP account via Thunderbird and it just won’t work. Don’t despair!