Fix: UID Copy Failed – Mac OS X Mail

Are you attempting to delete a message in Mac OS X mail but receive the following error?

The message “” could not be moved to the mailbox “Trash”

The IMAP command “UID COPY” (to trash) failed for the mailbox “INBOX” with server error: UID COPY failed.

This is an issue with IMAP unable to move a copy of the message on the mail server.

Go to Mail -> Preferences -> Accounts -> (select a mail account) -> Mailbox Behaviors -> Trash Mailbox -> and select On My Mac Trash bin.

Close the Mail preferences window and try deleting the message again.

Tags:

Mac

Comments

Carina Sfeir on Thursday, 20 August 2020 18:55

Hello
I have the same problem when I move mails from the inbox to folders
The IMAP command “UID COPY” (to INBOX.Aportes para la Gestion.PE 2021-2024) failed for the mailbox “INBOX”
Thanks!

Sal on Monday, 08 July 2019 11:47

It worked after weeks of frustration!!
Thank you

sharon carleton on Wednesday, 12 December 2018 18:12

Hi .. I have the same UID Copy Failed etc problem, but when I go to Mailbox Behaviours, there is no Trash Mailbox, only Junk, Sent etc. Mac OS Mojave 10.14.1 and Mail 12.with thanks