In the past I would just enter "users" in the "To " space and would get the list entry users@lists.fedoraproject.org. Somehow that now gets attached to send to a person instead of the list. Have to explicitly type in the list address. Is there a fix?

Thunderbird keeps continually telling me it wants to compact the mails storage for what is a trivial amount of space, Is there a way to make it use a reasonable size to do the prompt?

I set the font size to small but it always reverts to medium, where would a permanent setting be located?