My Apple mail account on my iMac fails to delete mail and update since installing High Sierra
My Apple mail account on my iMac fails to delete mail and update new mail since installing High Sierra
iMac, iOS 11.1
My Apple mail account on my iMac fails to delete mail and update new mail since installing High Sierra
iMac, iOS 11.1
Does the same problem occur if you restart your Mac in "Safe Mode"?: Use safe mode to isolate issues with your Mac - Apple Support.
Some additional troubleshooting steps to consider:
The last two suggestions are described in greater detail here: Set up Mail with email accounts - Apple Support.
Create a backup if you haven't done that already. To learn how to use Time Machine please read How to use Time Machine to back up or restore your Mac - Apple Support. That doesn't have anything to do with your Mail difficulties; it just goes without saying that you should have a backup.
Also, if you are using any non-Apple "anti-virus", "cleaning", "washing" or similarly categorized junk on your Mac, don't. That also just goes without saying.
Does the same problem occur if you restart your Mac in "Safe Mode"?: Use safe mode to isolate issues with your Mac - Apple Support.
Some additional troubleshooting steps to consider:
The last two suggestions are described in greater detail here: Set up Mail with email accounts - Apple Support.
Create a backup if you haven't done that already. To learn how to use Time Machine please read How to use Time Machine to back up or restore your Mac - Apple Support. That doesn't have anything to do with your Mail difficulties; it just goes without saying that you should have a backup.
Also, if you are using any non-Apple "anti-virus", "cleaning", "washing" or similarly categorized junk on your Mac, don't. That also just goes without saying.
Many thanks rebuilding the mail solved the problem
My Apple mail account on my iMac fails to delete mail and update since installing High Sierra