After downloading Sonoma upgrade to my iMac, my email account will not stay open. Closes after a couple of seconds.
1) Click on email app and it opens for about 2 seconds
2) Email app closes and I get Yellow ! saying Mail quit unexpectedly with options to: Reopen, Report, or ignore.
3) I choose Reopen and the same thing occurs again as in #! and #2.
4) Second time I choose Report- I report to Apple the problem.
5) This has all occurred in the last hour after I downloaded the Sonoma upgrade.
Windows, Windows 10