I've read a lot of similar problems, but have not seen a solution. So I'm sorry if this is repetitive. In short, one day my vast amount of folders had emails in them. The next day, every one of them were gone from view.. When I click on "properties" for any given folder, it gives an accurate count of emails that are supposed to be there in numbers, but you can't see them. While in properties, the "repair folder" button isn't active. A mouse over says it's supposed to rebuild, but clicking on that and OK does nothing. I did a global rebuild by quitting Thunderbird, going in to my Profile and deleting the "global-messages-db.sqlite file". Then restarted Thunderbird. The Activity Manager did show that it indexed everything, but nothing still showed up. I made sure my "view" for both messages and threads were on "all". So that's not it either. I even tried the Troubleshooting Mode, and all it suggested was that I clear my start up cache, which I did. Still nothing. Meanwhile, Thunderbird is receiving and sending new emails. All filters, addresses and folders are still there. Just nothing in them save the new emails I got today. I'm at a loss as to how to recover the emails the properties says exist, but hiding from me. Specifics... Windows 10, Thunderbird version 128.5.2est (64 bit) Any assistance to this somewhat competent user would be appreciated. Thanking you in advance.