Why is Mac Mail not working?
With a new macOS out there, some Mac users have encountered Mac Mail problems following an attempt to update to macOS Catalina.
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If you are experiencing any of the problems listed below, we’ve got fixes to get your Mac Mail working as it should. Despite numerous improvements from the previous operating system, there weren't too many changes made to the Mail App in Catalina.
However, there have, and were numerous reports of the app crashing or unexpectedly quitting, which is why fixes and workarounds are currently needed to ensure the Mail app works as it should.
Here are a number of problems and 12 fixes for those who've encountered unexpected issues with Mac Mail.
1. Mail not launching since macOS Catalina update
This is one of the most common problems people keep encountering, and it seems the fix is pretty simple too.
Fix: Launch the Mac Mail app from your Applications
![Mac Mail App Opens And Closes Mac Mail App Opens And Closes](/uploads/1/3/4/1/134134042/882822890.jpg)
If Mail launches that way, drag the icon out of the Dock. Once that has vanished, drag the icon — a copy of it will be made —back into the Dock. Then close Mail and attempt to open it again via the Dock. Providing that works, your problem is fixed.
Tip: Control + Click the Mail app icon to reveal 'Open' command in the context menu.
2. Mail crashing or running slow
Now, if the above solution doesn't work and Mail is either crashing or running slowly, there are other ways you can get it working smoothly again. No one can be without access to email for too long!
Fix 1: Force Quit the Mail app
Do this the usual way, and if that doesn't work, move onto the next step.
Fix 2: Restart Mail using the Activity Monitor
- Go to Activity Monitor through Spotlight, Siri or Utilities.
- Type ‘Mail’ into the search function.
- Now click on the X symbol to force close.
- Attempt to restart the usual way - or take it out of the Dock and put it back in (fix #1), before trying to restart the Mail app.
Fix 3: Delete saved Mail states
If the solutions above don't work, let’s start to clear out some prior-state files on your Mac.
This requires going into your hidden Library folders.
- Open Finder > Go to Folder...
- Now hold the Option key and Select Library to open these folders.
- Find this folder: Containers > com.apple.mail > Data > Library > Saved Application State
- Within that, move this folder into Trash: com.apple.mail.savedState
- Empty the Trash and try to restart Mac Mail the usual way.
Important: Back up the mentioned folder so you can put it back if something goes wrong.
If that has worked, you can restart Mail and it should be running smoothly. If not, there are other solutions below, and some that don't involve quite so much digging within Library folders and files - which aren't always so easy to find for those who aren't Mac power users.
3. Mail folders missing
Open Mail App
In some cases, these problems have caused Mail folders to go missing - without those the app won’t work, so there are solutions to these that most users can manage without too much difficulty to get the Mail app working again.
Fix: Check your Mail Connections
- Open the Mail app.
- Go to the Window in the top menu and click on Connection Doctor.
- This will show whether there are problems with connecting to the Mail app.
- Now re-check account settings and delete and re-add your Mail account to reset this.
- Your Mail app and every email should be accessible again.
4: Mail app is slow
Sometimes your Mail is slow because it has to deal with tons of open windows buried beneath other apps.
Mac Mail Opens And Closes
Fix: Merge Mail windows
Specifically for this your email client has a lesser-known command called 'Merge All Windows'.
Click on Mail > Window
Now, choose 'Merge All Windows'
Close the redundant windows to minimize the impact on your Mail's memory. Hopefully, it will get snappier.
Click on Mail > Window
Now, choose 'Merge All Windows'
Close the redundant windows to minimize the impact on your Mail's memory. Hopefully, it will get snappier.
5: Mail app junk
As outlined above, there are a number of fixes for Mail not working. Some of them require a certain amount of technical confidence and know-how. It is also worth noting that deleting the wrong folder or file within Library could disable another app accidentally. But, luckily, there's a software that can do all the fixing for you.
Cannot Open Mail App
Fix 1: Repair Mail settings with CleanMyMac X
CleanMyMac X is a Mac maintenance app that is notarized by Apple. It's developed by MacPaw, the makers of various productivity tools for Mac. The latest version of CleanMyMac has tools that help you troubleshoot Mail, beyond other things.
- Download CleanMyMac X free edition.
- Click on Mail Attachments.
Now, if you click Scan, the app will search for unnecessary files in Mail it can delete.
Now open Mail again — it should be working as good as new.
Fix 2: Reset the Mail App (nuclear option)
One of the quick fixes that works in 99% of the cases is to “reset” the Mail App. I use CleanMyMac X for this operation. It doesn’t delete the program itself but brings it back to its default state. This operation solves many app conflicts and incompatibilities. Also, your user files stay safe and are not being affected.
To enable this feature you need to do one preliminary step: open CleanMyMac X Preferences.
Have you installed CleanMyMac X? Ok, let's go.
Click CleanMyMac X (in the upper menu) > Preferences.
Click on Ignore List and choose Uninstaller.
Uncheck 'Ignore system applications' box.
Click CleanMyMac X (in the upper menu) > Preferences.
Click on Ignore List and choose Uninstaller.
Uncheck 'Ignore system applications' box.
We've just allowed CleanMyMac X to reset your Mail app.
The reset procedure:
- Launch the Uninstaller tool in CleanMyMac X.
- Choose Mail app in the list of Apple apps.
- Click on the Uninstall button with arrows — this reveals the Reset button.
- Click Reset.
As we mentioned above, CleanMyMac X is a really useful Mac performance improvement app. It comes with a whole load of features and tools that improve how a Mac runs, and can get your Mail app up and running again without stress or it taking very long. Hope you are receiving mail again — stay tuned for more Mac tips.
Several Mac users have reported that the Mail app window just pops up randomly and for no reason. Are you also having this problem on your Mac? This short article explains how you can stop the Mail app from keep launching itself automatically while using the computer. This is an annoying problem because it will interrupt what you are doing.
Please try each step until your issue is fixed:
1-Are your having this problem when you first open your computer. Depending on your settings, some apps, like the Mail app, may open automatically when you log in. If you want to stop this, the first thing you should check is your settings to see if if Mail is set to launch at login. Here is how you can check this:
- On your Mac, open System Preferences (from the Apple menu at the top-left of the screen), or use Terminal.
- Click Users & Groups
- Click the Login Items tab
- Here you will see the apps that will open automatically at login. If Mail is there, you can stop it from opening automatically, select and and click the minus icon to remove it.
2-Another change you you want to make is to disable the “Close windows when quitting an application” option. You can do that by going to System Preferences and click the General pane and the check the “Close windows when quitting an application” box.
3-Some Mac computers support a feature called “Power Nap”. If you enable this, you Mac will check for new mail messages (among other things) while it is asleep. You may want to disable this. Again not all Mac models support this feature. The following models support this:
- MacBook (Early 2015 and later)
- MacBook Air (Late 2010 and later)
- MacBook Pro (all models with Retina display)
- Mac mini (Late 2012 and later)
- iMac (Late 2012 and later)
- Mac Pro (Late 2013)
To turn this off, go to System Preferences. And click Energy Saver. And then uncheck the “Enable Power Nap” box.
4-It has been reported that email settings in Google Calendar may cause this. Are you using a Gmail account? If so, you may want to try this. (see also: Gmail not working?)
- Visit the Google Calendar site (https://calendar.google.com/calendar/)
- Login if not already
- Click the Settings Menu icon (upper right hand corner of your screen – gear icon) and from the pull down menu, click Settings
- Select your Calendar
- Scroll and find the General Notifications section
- And change all this notification settings from Email to None. (There are five options)
Further your may also want to disable event settings notifications. Here is how:
Mail App Keeps Opening On Mac
- Click the General tab (left area)
- Click Event Settings
- Click Notifications
- And select “Off”
See also: Calendar Invitation: Your Response To The Invitation Cannot Be Sent
5-Some users reports indicate that Mail will launch in split view. If you are having this problem, here is what you can do:
- Open the Mail app
- Click Mail and Preferences (from the menu bar)
- Click the General tab
- And then deselect the “Prefer opening messages in split view when in full screen” box
- And close the window
6–Restart your Mac in Safe Mode. Here is how:
- Turn off your Mac
- Turn on your Mac while pressing and holding the Shift key
- Release the Shift key when you see the login screen.
- Now your Mac is in Safe Mode. Does your problem still occur?
- If now, restart your Mac normally, without pressing the Shift key
7-Force quit the Mail app. Here is how:
Windows 10 Mail App Closes
- Option, Command, and Esc
- Select the Mail app
- Click Quit
- Now restart your Mac
If none of the tips help you, you may contact Apple. You can also give Apple feedback about this problem.
Mac Mail App Opens And Closes Automatically
See also: How To Open Winmail.dat Attachments