I have successfully installed Big Sur on my iMac but cannot open Preferences in Mail. The moment I click on Preferences, the "beach ball" comes up and hangs until I force quit the app. I have restarted the computer, closed Mail and reopened it...same thing. Anyone else having that problem?
iMac 21.5″, macOS 10.15
A solution I found on my end was to force quit "deleteMailCache" in Activity Monitor. My mail would refuse to open, display full screen, or show any windows. It was barely responsive and the mouse wouldn't work on it despite restart efforts. The problem wouldn't go away until I tried this. Hope it helps anyone looking for an alternate solution.
I've found that if I wait 15-20 minutes after a reboot to launch mail, it works fine. There is something about starting it up too soon that makes it hang.
Apple - what the heck could take that long on a 16 core pro tower???
I tried it in Safe Mode and it did not crash. Rebooted back to normal now it does NOT crash. Strange.
I also had this problem with Mail (frequents hangs upon start, also the search function did not work properly), so I reinstalled Big Sur and now it seems to work fine... So until thse issues are fixed in an upcoming update, a new copy of Big Sur to be reinstalled might help, I guess...
My Mac Mail was working when I upgraded to Big Sur for a few weeks. However, today is froze when I would simply enter in an email address. Turning off "iCloud" mail as suggest above fixed the problem. (for now)
Thank you!
Someone posted turning off iCloud mail. I did so and all is fine. I can access my iCloud mail from my iphone. I hope they fix this.
Same here - find my Mac Pro experience really testing ... bad enough that my screens show super annoying graphic bugs like buttons disappearing in Music.app but now my Mail.app is basically useless. It only works when i disable the exchange account. Deleting the Mail folder in the user profile helps for 1-10min. From then on it immediately crashes when startet again. Feel like quality control at Apple took a hard dive.
Also, when mail freezes, get on another screen (3 fingers up) to force quit mail. Could not force quit mail from screen with mail.
After installing Big Sur 11.0.1 - Apart from crashing randomly, all my flagged emails are gone respectively the flags... There were random emails visible under Flagged and after clicking on the flag colors all disappeared, now there is 0 flagged email...
In general, the system crashes also after some time without exactly knowing which program caused it.
Turn off iCloud mail tried but not working on my side. I still have lot of mail app crashing and impossible action (like moving emails form email boxes to other one, restaure spam to received box...).
I am having same issue.
Does the problem also occur if you restart in Safe mode (hold the shift-key while restarting until you see the Apple-logo)? Rebooting in safe mode can take several minutes.
Yes, the problem still exists when I restarted in safe mode.
Unfortunately, this has not solved my problem. I still cannot access Preferences in Mail. It hangs and I have to force quit. I guess I'll wait for new release fixing the bugs
Ever since I installed Big Sur my computer has been slow, I have a hard time accessing mail and sometimes it all just freezes.
Mail crashing in Big Sur
