I have thousands of emails on the gmail server and I thought to download them to my local NAS storage using Thunderbird with POP configured. After the initial download many emails were missing. I want to try again because during the initial download I was sorting thru and deleting a lot of emails and I wonder if that somehow broke something in TB. So this time I want to allow the entire POP download to happen before I start sorting and deleting. I removed all my email storage and also the popstate.dat file (advice found on other messages on this forum). However TB will only download new emails and recreate a popstate.dat file. Any advice?