Mail auto shuts down on my iMac upon start up

Thanks I just found this method fixed it:

Step 3: Reindex Your Mailboxes

Reindexing your mailboxes in the Mail app might solve the issue. To do so, you must delete the “envelope” files:

1 Control-click or right-click the Finder icon on the menu bar, then select 'Go to Folder.'

2 Copy and paste this path into the 'Go to Folder' box and press Enter:

~/Library/Mail

3 Navigate to Vx/MailData. (x indicates what Mail.app version you're running, e.g. 10)

4 Find and move these files to the Trash:

◦ Envelope Index-wal

◦ Envelope Index

◦ Envelope Index-shm

I have separate user account on same iMac and the mail side is good, this is message from failure, I tried to re-enter the library in Finder, no good either:

Process:               Mail [6732]

Path:                  /System/Applications/Mail.app/Contents/MacOS/Mail

Identifier:            com.apple.mail

Version:               13.4 (3608.120.23.2.7)

Build Info:            Mail-3608120023002007~1

Code Type:             X86-64 (Native)

Parent Process:        ??? [1]

Responsible:           Mail [6732]

User ID:               502

Date/Time:             2024-05-08 08:22:48.890 -0600

OS Version:            Mac OS X 10.15.7 (19H2026)

Report Version:        12

Anonymous UUID:        97FE07DC-72D4-7D44-84A9-01D8BA7AC07B

Time Awake Since Boot: 410 seconds

System Integrity Protection: enabled

Crashed Thread:        2  Dispatch queue: MFEWSNetworkTaskHandler queue (QOS: BACKGROUND)

Exception Type:        EXC_CRASH (SIGABRT)

Exception Codes:       0x0000000000000000, 0x0000000000000000

Exception Note:        EXC_CORPSE_NOTIFY

Application Specific Information:

dyld3 mode

*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'EWS account returned a non EWSStore.'

terminating with uncaught exception of type NSException

abort() called

I find the problem is also in safe mode, where the Mail program crashes immediately. Any suggestions how to fix it must be mail file that is corrupt?