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Fix: UID Copy Failed – Mac OS X Mail

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.


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

Mac mail trash on mac preferences
  1. Close the Mail preferences window and try deleting the message again.

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chris on Tuesday, 03 July 2018 04:57

Thank you

Thank you
irfan on Thursday, 01 February 2018 04:02


Thursday, 13 December 2018

Shout Box!

HelenV - 12/12/2018 - 08:32

just got msg on my 7plus that someone is trying to sign in with my apple id in Nanjing, Jiangsu and I am in Athens Greece. Good thing I have 2 factor.

Alex - 11/12/2018 - 16:29

My TT-BH040 won't pair with another device besides my iPhone. I'm trying to pair them with my Windows 10 laptop.

iphone user - 10/12/2018 - 13:36

iphone xs max sometimes after unlocking does not switch horizontal to vertical view. I usually end up powering off and on. Latest iOS .12.1.1

Anonymous - 05/12/2018 - 23:17

Where can I get this App?

Mike - 05/12/2018 - 23:17


User - 26/10/2018 - 08:55

Have been habving this issue last hour. Unreal hinge is trash

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