Dear John,
Could you please do as you did with Firefox to avoid removal of "policies.json" when upgrading, if the file is present in ...\PortableApps\ThunderbirdPortable\App\Thunderbird64\distribution ?
Thanks a lot for your awesome work and for the quick 68.12.0 update!
It'll be in the next release. The commit is here: https://github.com/PortableApps/AppConfigs/commit/a6428d13c5a48e0c835c72...
Sometimes, the impossible can become possible, if you're awesome!
That's great, thanks a lot!