Mail cannot save information about your mailboxes because there isn't enough space in your home folder
Out of the blue mail is displaying the message "Mail cannot save information about your mailboxes because there isn't enough space in your home folder".
I have currently 145GB free space.
I followed https://discussions.apple.com/thread/250717871 - yet the import failed several times due to an (unspecified) error.
at the fourth or fifth attempt the import went through - yet the problem still persists.
what can I do?
iMac 27″, macOS 10.15