It appears Apple Mail is now behaving. A pause from email for a couple of hours, then creating a new user account using the same AppleID (and hence the same personal email address), then switching back to my normal user account has given Apple Mail the necessary enema.

I’m not sure why but AppleMail on my slaptop keeps crashing. Email on my phone is so far unaffected. Email on my main Mac in Edinburgh also appears to be unaffected. (Pause to worship Teamviewer.) Accessing email via webmail or my university’s VPN also works, but these are rather slow.

So if you need to send me any files to work on, please let me know first so I can find wifi then log into webmail.