Mail Import Fail
on opening mail on my iMac, a dialog box opens saying mail import. On clicking continue the mail folders are imported but just before it is complete the import failed message comes on the screen. I am asked to check if I have enough space in my home folder. How do I do that when I cannot open mail?
This has happened before, often after power outages, but usually imports everything at the second attempt.
iMac 21.5″, macOS 13.4