The only thing I can think of that might possibly work is to turn report dynamic content changes off, though I'm just about sure it won't help to turn it off.  But you can try.  The toggle is NVDA key 5 on the main keyboard.

Of course, you could downgrade to a version of the program that doesn't have the problem.  You could get the portable version so you could leave your current installation undisturbed and update it to see if the problem is solved while continuing to use the portable version.  I suspect that this may be an Aria live region but I am not aware that NVDA has a setting to turn reading of live regions off.  It should.

Gene
-----Original Message----- From: Robert Logue
Sent: Tuesday, September 01, 2020 11:11 AM
To: nvda@nvda.groups.io
Subject: Re: [nvda] Extra verbosity in Thunderbird

I tried turning off everything I could find that might stop the extra
speech in both Thunderbird and NVDA settings.  I unchecked just about
everything I thought was relevant including status bar.


I tried using screen review mode to find the notification style text
being spoken. No luck there.


What other tools does NVDA have to control this kind of verbosity in
programs?


Bob



On 2020-08-31 1:07 p.m., Hope Williamson wrote:

Yeah I have the same issue. It's pretty annoying. Especially when it
keeps saying downloading however many messages. I tried turning off the
status bar thing, and it still does it.