Mozilla Connect

the big problem of Mozilla (or any other development house) is not taking case user requests.

  In Betterbird (a thundebird fork) integrated the default folder on startup, so I don't think it's very difficult to do this in thunderbird too.

Did they also fix the favorite folder on startup?

how long is missing?

there is a "beta" version of Manually Sort Folders, not still present in addon page but you can find it in github https://github.com/protz/Manually-Sort-Folders/issues/199#issuecomment-1751930028More or less everything works except reordering the sub...