Is your Mail not working after macOS Mojave updates?
macOS Mojave has a lot of great features including the dark mode, the dynamic display mode, improvements to the Photos App and many other features. There have not been too many changes made to the Mail app. Several users report that their Mail crashes or quits unexpectedly after updating to macOS Mojave.
If you are experiencing this issue after updating to macOS Mojave, please follow the steps below and check if your problem is solved.
Check Out Our Video on the Mail app not working, or read the text below
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- All About Dark Mode and Dynamic Display mode in macOS Mojave
- How to Downgrade from macOS Mojave to macOS High Sierra or Sierra
The chances are that your Mail App is unable to save the prior state properly and that’s why it keeps crashing and or not responding.
Mail Not Launching or Mail Not Working After macOS Mojave Upgrade?
One easy thing to try if faced with Mail Not Launching on your MacBook is to run the Mail app from the Applications folder as opposed to the dock on your screen.
If that works, you will need to clear the icon from the dock and then re-add it later.
If launching using the Applications folder did not resolve your issue, try quitting Mail and restarting the application while holding down the Shift key.
When neither of these tips help, please follow the detailed steps below.
Looking for macOS Catalina specific steps to solve mail problems? Check out this article instead: Mail not working in macOS Catalina, How-to fix
Mail Crashing or Slow After macOS Mojave Upgrade, How-To Fix
To resolve the mail crashing/mail not responding issues on macOS Mojave, the best course of action is to remove some of the prior app state data, restart your MacBook and then re-launch Mail.
We recommend that you have a clean backup of your MacBook before proceeding with the steps.
- Start with force quitting the Mail App on your MacBook / Mac. If you are unable to force-quit the app using the dock icon ( Mail App does not respond), open the activity monitor.
- Click on the Spotlight icon at the top right corner of your MacBook and type in Activity Monitor (image). Click on the Activity Monitor App to launch the utility.
- Type in ‘Mail’ in the search box and then highlight the app. Next click on ‘X’ to shut down the application.
- Now that you closed the Mail App, start clearing some of the prior-state files on your MacBook.
- Open Finder App
- Hold the Option key and select Library from the top menu
- If you can’t see your user library, follow the steps outlined in this article to get your user library to show up
- Go to the folder ‘Containers > com.apple.mail > Data > Library > Saved Application State‘ and move the folder called ‘com.apple.mail.savedState‘ to the trash.
- The next step is to clear the Mail app library containers
- Open Finder App, Press down the Option Key and click ‘Go’ on the top menu and choose ~/Library/Containers
- Look for the following two files and drag them out to your Desktop. That way you will have the files saved for later if you need them.
- The next step is to remove the Mail Envelope files from the Library. Do this using the Finder App as explained above.
- The Envelope files are present in the MailData folder. Using your Finder App, Click on Go > Go To and type in ~/Library/Mail/V6.
- Or manually navigate to the exact location in User > Library > Mail > V6
- Or manually navigate to the exact location in User > Library > Mail > V6
- Expand MailData folder. There should be three main envelope files, and they are shown in the image here. Remove these out to your desktop.
- Empty your Trash, Restart your MacBook and then try launching Mail. Check if your Mail issue has resolved.
- If your Mail launches without any issues and does not crash or hang, you can move the com.apple* files from your desktop to the trash
Depending on how you set-up your Mail App, your preferences for Mail might look different as they set back to default.
Mail Folders Missing After macOS Mojave Update?
The other issue that sometimes happens when you upgrade to a new macOS version is that some of your Mail folders vanish. This situation is rare, and we haven’t seen it while using macOS Mojave.
The first thing to do if you have this issue is to check your Mail Connections on macOS Mojave
- Launch Mail App
- Go to the window on the top menu and choose Connection Doctor
- This will show you if there are issues with the Mail Account connections.
- You will need to re-check your Account settings or delete and re-add your email account into Mail to get this resolved
- Once the connection issue is resolved, the chances are that your Mailbox will be accessible
If your connections are good and you are still missing your folders, you will need to rebuild your Mailbox and Re-index your messages to resolve the problem.
The Apple support documents walk you through the rebuilding effort in great detail.
Two-Factor authentication-related issues
We have seen some users having issues with their Mail App on their MacBook after upgrading their account with two-factor authentication (2FA). This is more closely related to your iCloud account.
You can follow this article below to understand the issue and fix it on your MacBook.
We hope that this troubleshooting article was helpful to you. Please let us know if you have any questions or comments.
- If your Mail Preferences are not showing or blank, try the following:
- Quit the Mail App and all open apps
- Open Finder
- Select the Go menu and choose Go to Folder
- In the search bar, type the following: ~/Library/Containers/com.apple.mail
- Select and highlights all the contents of that folder, then right-click
- Choose “New Folder with Selection”.
- Name the folder OLD. BUT DO NOT move this new folder from its current location
- Close the Finder Window
- Restart your Mac
- Open Mail Preferences and see if it’s working normally
- Close the Mail app. Find and delete or isolate this file on your Desktop /Users/YOUR USERNAME/Library/Preferences/com.apple.mail-shared.plist. Reopen Mail and see if it now allows you to enter your username and password. You might need to do these steps a few times before it sticks. Once Mail opens, and you confirm your account, delete that old .plist file and empty your trash to remove it completely
- For me, there was a sync problem with iCloud. Logging out of iCloud and then logging back in fixed the issue for my Mac. Be aware that when you do this, iCloud starts downloading all your email again–which depending on your Mailbox size, can take some time!
- I had engaged two-step authentication on my email. So I had to request from Gmail an app password. Once I entered that password, everything worked! So if you use 2-step verification and see a “password incorrect” error when trying to access your account, an App password may solve the problem
- If you are missing mail folders and you can open the Mail app but it’s just not working correctly, try this before you reset the account
- Open the Mail app
- Choose View > Show Mailbox List
- Tap the arrow next to Inbox from the left sidebar to show all your accounts
- Right-click on one of your accounts or the account that’s having problems
- Choose Get Account Info
- Wait for information to populate
- Choose a single folder (like Inbox or any other folder you created)
- Tap Show Messages
- All your email accounts folders and their messages should now appear
Obsessed with tech since the early arrival of A/UX on Apple, Sudz (SK) is responsible for the original editorial direction of AppleToolBox. He is based out of Los Angeles, CA.
Sudz specializes in covering all things macOS, having reviewed dozens of OS X and macOS developments over the years.
In a former life, Sudz worked helping Fortune 100 companies with their technology and business transformation aspirations.
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