6 Replies Latest reply: Oct 17, 2013 3:44 AM by Quotes
lisafromcanyoncountry Level 1 Level 1 (0 points)

Please help! I've done a bunch of stuff already, with no results. Something regarding a file called envelope something-or-other, gone through the "rebuild mailbox" route, and none of it has helped. I click on any mail in my IMAP inbox and it takes at least 20 seconds for the message to appear. Even closing my mail window altogether takes a long time. Typing a message sometimes drags. It's all very annoying. I am somewhat savvy computer-wise, but have not found a solution. I welcome any ideas. Thanks!


MacBook Pro, OS X Mountain Lion (10.8.2), Mail app
  • 1. Re: Mail app is super slow
    Linc Davis Level 10 Level 10 (118,505 points)

    You need to delete the Mail "sandbox" folder. Back up all data first.

    Triple-click the line below to select it, then copy it to the Clipboard (command-C):

    ~/Library/Containers/com.apple.mail

    Quit Mail.

    In the Finder, select Go Go to Folder from the menu bar. Paste (command-V) into the box that opens, then press return. A Finder window should open with a folder named "com.apple.mail" selected. If it does, move the selected  foldernot just its contents — to the Trash.

    Relaunch Mail and test.

    Caution: If you change any of the contents of the sandbox, but leave the folder itself in place, Mail may crash or not launch at all. Deleting the whole sandbox will cause it to be rebuilt automatically.

  • 2. Re: Mail app is super slow
    lisafromcanyoncountry Level 1 Level 1 (0 points)

    You rock!!!! Thank you so much. It works perfectly!!!

  • 3. Re: Mail app is super slow
    redesigned Level 1 Level 1 (0 points)

    This also solved the issue for me.  Mail.app was almost unusable, now it is back to the speed i remember prior to upgrading to Mountain Lion.  Thank you so much for this awesome tip!

  • 4. Re: Mail app is super slow
    akutz Level 1 Level 1 (0 points)

    I created an Alfred2.app workflow that handles this on launch. It also saves your settings.

  • 5. Re: Mail app is super slow
    redesigned Level 1 Level 1 (0 points)

    you sir are a hero and made my day!  Thank you!

  • 6. Re: Mail app is super slow
    Quotes Level 1 Level 1 (0 points)

    I recently upgraded from 10.5.8 to 10.8.5, and found Apple Mail was slower loading messages

     

    Deleting this folder worked for Apple Mail in Mountain Lion 10.8.5

     

    However it also did a reset of the following:

    - junk mail handling settings ... re-enabling then prompted a search of mailboxes

    - message font preferences ... easily reset but do you know what fonts you are using now?

    - window layout

    - menu bar customisations ...  take a screengrab before deleting the settings folder

    - conversation view settings