Before the update on 3/1/2019, I could send invoices from Quicken, via TB, and the email with the invoice attachment would open as a new outgoing message in TB. I could then add copy to the email, or change which email account I was sending from and so on. But since the update, I get a warning message that another program is trying to send an email, and when you click OK, the message is sent automatically, without me being able to customize it. Minutes before TB installed the update, it worked fine. The first one I sent after the update, resulted in this, and every one since. No settings were changed. No defaults were changed. THE ONLY THING THAT CHANGED WAS THE AUTOMATICALLY INSTALLED UPDATE TO THUNDERBIRD. IT IS A PROBLEM WITH THUNDERBIRD THAT DID NOT EXIST BEFORE THIS LATEST UPDATE. 60.5.2 is the culprit. All default email settings are set to TB. How do I make it stop? Can I uninstall the update? Because at this point, you have made the software problematic for me to say the least.