Support Virtual Folders
Is your feature request related to a problem? Please describe. As a user, I want to also get statistics about Thunderbirds virtual folders.
Describe the solution you'd like So I can write complex search requests, store them as a virtual folder and configure ThirtStats to watch that virtual folder. Currently I can already select the virtual folder, but no results are shown; so this feature could also be seen as a bug.
Describe alternatives you've considered The Alternativ extension "ThunderStats" already supports virtual folders.
Additional context
Thanks for this feature request. The actual bug is, that virtual folders are shown in the select list, they shouldn't be selectable. We had a lot of issues caused by virtual folders (like incorrect email count, infinite processing etc.). When virtual folders are properly working with Thunderbirds WebExtension APIs we can give this a spin.