Mac mail flags not working - Big Sur

Since the Big Sur upgrade I can't flag emails. I use this facility a lot, so this is a real problem. Has anyone found a workaround?

iMac 21.5″, macOS 11.0

Posted on Nov 15, 2020 1:42 PM

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Posted on May 3, 2021 12:49 PM

Missing Flags in Column View

To see your email flags while using Column Layout:

  1. Go to the column headings bar and right click on any of the headings (From, Subject, etc.) 
  2. A list of column options appears. Choose Flags to add a Flag column to your view.


102 replies

Dec 7, 2020 12:53 AM in response to justinec16

This looks quite different on my Mac, but is not really the issue.

The set of smart mailboxes in the left column showing flagged email grouped by flag tyep does not work. In each flag grou uí see the number of flagged messages, but when i ckick the mail box it shows nothing, and soúddent´ky the number in the mailbox is shown as 0. If i close the list and reopen it the numbers are aguian ciórrect but the messages are not shown.


I have syncronized the emails and rebuilt the mailboxes, closed and reopened Mail, but to no help.


If i am in the inbox and click the falkged emails favourite nothing happens except the number of emails with that type of flag goes to 0. And frequently that whole mailbox disappears from the menu, however it at some later time suddenly reappears.


I also find many times the search functions completely fails, nothing happens although the searched for iten definitely is present.


Ola, Mac user since 92. mailbox

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Mac mail flags not working - Big Sur

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