I am facing some issue with iCal and Mail Application. As soon I open it closes it self within 5 seconds.


I have tried following things

Delete Following files

  • com.apple.mail.plist
  • com.apple.mail-shared.plist
  • /Users/users/Library/Mail/V4/MailData/Envelope*


Start in Safe Mode

However nothing is working.


As long as your clock is displaying the correct local time, resetting NVRAM won't affect Mail or Calendar. I'd suggest being more aggressive in cleaning out of Mail's database files and then re-testing:

  1. delete Mail.app's (~/Library/Mail/) data folder (not just its contents)
  2. re-delete both /Library/Preferences/com.apple.mail.plist & ~/Library/Preferences/com.apple.mail.plist
  3. re-delete ~/Library/Preferences/com.apple.mail-shared.plist (if it was re-created)
  4. re-test

Start by resetting your NVRAM

How-To Reset NVRAM

  1. Choose Apple Menu > Shut Down
  2. Power up your Mac
  3. Immediately press these keys at the same time: Option, Command, P, and R and maintain this hold as your Mac boots
  4. You must press the keys before the black screen with the Apple logo appears
  5. Continue pressing the keys until your Mac restarts, around 15 seconds Release the keys

If Mail Keep on Crashing

  1. If you have an instance of the Mail app running on your macOS High Sierra, exit out it. If the app is unresponsive or frozen, force-quit the app

  2. The next step is to address the Mail app’s preference files and remove them in the case they are corrupted and are causing these issues. Using your Finder app, much like before, choose Go and ‘Go to Folder…’ and type in the path as shown here and below in the image: ~/Library/Preferences


  1. Locate these two files: com.apple.mail.plist and com.apple.mail-shared.plist If you can’t locate these files, make sure you are looking at your User Library, not the Main Directory Library

  2. Delete the two plist files by moving them to trash If you don’t want to delete these files, move them to your desktop to isolate them

  3. Restart Your MacBook and then launch Mail and see if the issue has resolved If the problem is gone, go ahead and delete any files you isolated to the desktop

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