Same issue for some time now
Only different an getting the p70- imap.mail.me.com" error
Has been happening on 2 M2 and 1 M1 Machines since the release of macOS 14.0 Sonoma
All machines running Sonoma 14.1
Have reported to Apple Several times and seems to falling on deaf ears so far
Resorted to extra tab with www.icloud.com >> Mail open and running
Then have a few suggestions ;
1 - Get Support Choose a product and we’ll find you the best solution.Start now and open an Apple Support Ticket as they are Apple Employees to deal will these types of issues .
Perhaps if more please bring to the attention of Apple we may get a fix ?
2 - Product Feedback - Apple and make it known to Apple regarding this ongoing issue