Lately, I've been getting strange behaviors on my iCloud emails in the Apple Mail app when running in both my 2018 Mac Mini or my 2020 MacBook Air. First, when I delete my iCloud emails, it will reappear in my Inbox after a few seconds and when I try to delete it again, this time, it will try to go back to the Inbox again but this time I'll get a popup error message saying "The message could not be moved to the mailbox “iCloud”. Mail was unable to open this mailbox on the server “p48-imap.mail.me.com”. The server returned the error: Server Busy. Please try again later. (took 9 ms)" but still the email will reappear on my Inbox.
Another strange behavior is when I try to move some of my email to a folder I created under my iCloud email account, I get this popup error message saying "The IMAP command “APPEND” (to folder) failed with server error: Server Busy. Please try again later. (took 6 ms).". In my iPhone or iPad, I'm not getting these errors, it's working fine. It's only happening on my Macs.
I tried disabling my iCloud account and re-enabled it, it didn't work. I tried the Rebuild function but that didn't work either. My Gmail or my Yahoo email accounts on my Apple Mail are working find and so I'm not sure what's going on. Any help or advise will be greatly appreciated. Thank you.
Another strange behavior is when I try to move some of my email to a folder I created under my iCloud email account, I get this popup error message saying "The IMAP command “APPEND” (to folder) failed with server error: Server Busy. Please try again later. (took 6 ms).". In my iPhone or iPad, I'm not getting these errors, it's working fine. It's only happening on my Macs.
I tried disabling my iCloud account and re-enabled it, it didn't work. I tried the Rebuild function but that didn't work either. My Gmail or my Yahoo email accounts on my Apple Mail are working find and so I'm not sure what's going on. Any help or advise will be greatly appreciated. Thank you.