Catalina "MAIL UPGRADE" stuck!
Catalina installed....
MAIL UPGRADE
shows: "Upgrade your Mail database... This may take a few minutes."
HOURS go by and the progress bar does not move stuck at 1/4" progress on the 4" bar.
I've forced-quit MAIL (twice), restarted the iMac 27" (twice.)
Any advice about what to delete in CONTAINERS? or other fix?
TY
Here's some EtreCheck Data: