Mail in Big Sur crashes upon launch if a Gmail account is enabled

Mail crashes immediately upon launch if my Google Mail account is enabled.

It launches normally if it is shut off.

Crash summary:

Code Block language
code-blockProcess:							 Mail [522]
Path:									/System/Applications/Mail.app/Contents/MacOS/Mail
Identifier:						com.apple.mail
Version:							 13.0 (3645.0.6.2.3)
Build Info:						Mail_App-3645000006002003~3
Code Type:						 X86-64 (Native)
Parent Process:				??? [1]
Responsible:					 Mail [522]
User ID:							 501
Date/Time:						 2020-06-24 00:44:27.974 -0600
OS Version:						Mac OS X 10.16 (20A4299v)
Report Version:				12
Time Awake Since Boot: 54 seconds
System Integrity Protection: enabled
Crashed Thread:				0	Dispatch queue: com.apple.main-thread
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 'NSRangeException', reason: '* -[__NSArrayI objectAtIndexedSubscript:]: index 3 beyond bounds [0 .. 2]'
terminating with uncaught exception of type NSException
abort() called




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TCMfan
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I have the same (read past the end of the array) bug.
I can open either of my @gmail.com accounts, but not both at the same time.
And, I can't open my @mac.com at all.


Posted by
rkda
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Same problem here. Disabling Google in the internet account did not help...
Posted by
alphasystems
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I have the same issue - how am I supposed to turn of GMAIL if it won't even launch Mail without crashing? I disabled them in Internet Settings but same issue. Oddly, I only have this issue on my iMac Pro not on my MacPro or MacBook Pro??
Posted by
iconoclast
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OK I just solved the issue on my Mac maybe it will work on yours??

I moved the LIbrary/Mail folder out of its place and placed it on the desktop then rebooted then launched Mail and it works fine. Hopefully this works for others.
Posted by
iconoclast
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Mail works fine on my iMac but crashes on my MacBook Pro when it tries to move emails in Gmail. Once I turn Gmail off the Mail app works fine. For now I will leave Gmail off since I only use it as a junk mail catchall.
Posted by
dvdaniels
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