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Aug 6, 2016 9:04 AM in response to emalmaby chris_g1,Hello there, emalma!
Thanks for reaching out to the Apple Support Communities! It sounds like you are having an issue with the Mail app on your iMac. I know how important it is to be sure the iMac is working properly as well. Check ouit this art5icle that has steps for Mac OS X: How to troubleshoot a software issue. Specifically:
If the issue occurs in various applications, or in Mac OS X
For example, if no applications can be opened.
Tip: If the issue began right after you performed a Mac OS X re-installation (excluding erase-installation), see Applications don't work after reinstalling Mac OS X.
- The first and easiest test to try is to see if the issue affects a different user account on your Mac. Each user account has customized preferences and other items stored in its home directory. You'll first need to create an additional user if one does not already exist (follow steps a-h below). Then, log out of the current user and test the issue in the new user account.
If this resolves the issue, there may be an issue with a file in the home directory of the original user account.
- From the Apple menu, choose System Preferences.
- From the View menu, choose Accounts (or choose Users if using Mac OS X v10.2 or earlier).
- Click "+" (or click New User if using Mac OS X v10.2 or earlier).
- Give the new user a name and short name.
- Mac OS X v10.3 or earlier only: Click the Password tab, and give the user a password.
- Mac OS X v10.3 or earlier only: Click Security.
- Select the checkbox for "Allow user to administer this computer". This makes the user account an administrator.
- Click OK, or quit System Preferences.
- Start up in Safe Mode (Mac OS X v10.2 or later only). If the issue does not occur, there may be an issue with a startup item, login item, or kext file. Refer to this article for troubleshooting suggestions.
- If the issue does not appear to be related to preferences, a login item, or a kext file, and still persists in Safe Mode, there may be an issue with a cache file in your home folder:
- From the Finder's Go menu, choose Home.
- Open the Library folder.
- Drag the Caches folder to the desktop.
- Attempt to reproduce the issue.
- If issue is resolved, drag the Caches folder to the Trash.
- If issue persists, from the Finder's Go menu, choose Go To Folder.
- Go to this folder: /Library
- Drag the Caches folder to the desktop.
- Attempt to reproduce the issue.
- If issue is resolved, drag the Caches folder to the Trash.
- If issue persists, go to step 4.
- If the issue persists, there may be an issue with a third-party font file in your home folder. See this article for information about using Font Book to enable or disable fonts in Mac OS X v10.3 or later.
These steps will help determine if there is a software issue happening.
Cheers!
- The first and easiest test to try is to see if the issue affects a different user account on your Mac. Each user account has customized preferences and other items stored in its home directory. You'll first need to create an additional user if one does not already exist (follow steps a-h below). Then, log out of the current user and test the issue in the new user account.
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Aug 6, 2016 1:53 PM in response to emalmaby Eric Root,Do a backup, preferably 2 on 2 separate drives.
Quit Mail.
Go to Finder and select your user/home folder. With that Finder window as the front window, either select Finder/View/Show View options or go command - J. When the View options opens, check ’Show Library Folder’. That should make your user library folder visible in your user/home folder. Go to Library/Containers/com.apple.mail. Move the folder com.apple.mail to your desktop. You must move the entire folder, not just the contents.
Restart, re-launch Mail and test. If the problem is solved, recreate any required Mail settings and import any emails you want to save from the folder on the desktop. You can then put the folder in the Trash. If the problem remains, return the folder to where you got it replacing the one that is there.
If that doesn’t solve it repeat the above using Containers/com.apple.MailServiceAgent.
Information learned from Linc Davis. Thanks to leonie for some information contained in this.
