Options:
1) Run Keychain First Aid
- Open Keychain Access, located in Applications/Utilities
- Choose Keychain Access > Keychain First Aid.
- Enter your user name and password.
- Select Repair and click Start.
- If any problems are found run again to verify all repaired.
Note: some users have had to restort to starting over in a new Keychain.
Resetting your keychain in Mac OS X
2) Run Repair Drive and Repair Permissions using Disk Utility in Recovery. Also run Reset Home Directory Permissions and ACL's.
Boot into the Recovery Drive by holding down Command R when restarting.
Open Disk Utility on recovery and run Repair Drive and Repair Permissions.
On top, in the Menu Bar click the Utilities item then select Terminal.
- In the Terminal window, type resetpassword and hit Return.
- The Password reset utility launches, but you’re not going to reset the password. Instead, click on the icon for your Mac’s hard drive at the top. From the drop-down below it, select the user account where you are having issues.
- At the bottom of the window, you’ll see an area labeled 'Reset Home Directory Permissions and ACLs'. Click the Reset button there. The reset process takes a couple of minutes.
Restart
3) Download and run the combo updater to refresh your OS X files.
OS X Mavericks 10.9.4 Update (Combo)
http://support.apple.com/kb/DL1755
Post Date: Jun 30, 2014
File Size: 958.2 MB
4) Repair Mail
With Mail quit....
Go to your User's Library folder.
**Show Library Folder**
Select the Finder in the Dock. Under Go in the Menu bar > hold down the Option key and you’ll see the Library.
Go to Containers. Drag the com.apple.mail folder to the Desktop
Go to Mail folder.
Select the V2 > MailData folder.
Delete any files in MailData with envelope in the name. (should be 3)
Go to Preferences. If you find any com.apple.mail.plist files, delete these.
Log out under the Apple in the Menu bar
Log in
Open Mail. Mail will reindex your files.
5) Remove all accounts in System Preferences > Internet Accounts.
IMPORTANT: For POP account, be sure you archive all messages in the Inbox before removing the account.
Add back accounts one at a time, verifying that they are working correctly.