Mac Mail Not Working: A Painless Guide to Fixing Common Mac Issues

Common issues With Mac Mail & How to Solve Them

Mail Not launching since macOS Catalina update

The Solution: Launching Your Mac Mail App

Mac Mail Login/Log Out Issues

The Solution 1: How to Log In of Mail on Mac

  1. First you’ll need to restart your Mac by holding down the Command + S keys on your keyboard as it boots up.
  2. You’ll be prompted to enter a command as your computer boots up. Then, enter in the following: /sbin/mount -uw /
  3. Press Enter on your keyboard. Then enter in the following: rm /var/db/.applesetupdone
  4. Press Enter, then restart your Mac.

The Solution 2: How to Log Out of Mail on Mac

The Solution 3: Log Back Into Mail if You Haven’t Removed Your Account

The Solution 4: Log Back Into Mail if You Have Removed Your Account

Mail Crashing or Running Slow

Solution 1: Force Quit the Mail App

Solution 2: Restart Mail using the Activity Monitor

Solution 3: Delete Saved Mail States

Last Fix: Renewal or Rebuild

  • Maybe your system requires some renewal. Go to the Update section in your System Preferences and update the OS.
  • Maybe your Mail only needs a new beginning. Click Rebuild in your mailbox. Hopefully, now it is all working just fine.

Mail Folders Missing

The Solution: Check your Mail Connections

Mail App Is Slow

The Solution: Merge Mail Windows

Mail App Junk Not Working

The Solution: Reset the Mail App

Mail Not Opening on Mac

Solution 1: Check the App Folder

Solution 2: Update Your Mac Operating System

  • Update Now installs the latest updates for the currently installed version.
  • Upgrade Now installs a major new version with a new name, such as macOS Big Sur.

Mac Mail Search Not Working

Solution 1: Restart Your Mac or Use Safe Mode

  1. Similar to turning off your device and turning it back on again, you should close your Mac Mail app
  2. Then hold the “Shift” key while clicking the Mail icon to open it in Safe Mode.
  3. Close the Mail app completely then repeat step 2 once again.
  4. Close the Mail app and then reboot your Mac
  5. Once your Mac is up and running you can open your Mail app normally and your search should be working once more.

Solution 2: Use the Shift Key

  1. Hold down the Shift key and launch the Mail app.
  2. Have the app open for a couple of seconds and then exit the Mail app and restart your computers

Solution 3: Customize the Touch Bar

  1. On your Mac, choose Apple menu > System Preferences, click Keyboard, then click Keyboard.
  2. Set options for the Touch Bar.
  3. Touch Bar shows: Click the pop-up menu, then choose what you want the Touch Bar to show — for example, app buttons or the expanded Control Strip.
  1. Press and hold Fn key to or Press and hold the Globe key to: Click the pop-up menu, then choose what you want to happen when you press and hold the key — for example, show the Control Strip or quick actions.
  2. The choices vary depending on what you set for “Touch Bar shows.”

Solution 4: Manually Select Emails

Messages Not Sending on Mac

Solution 1: Check the Mail Server

Solution 2: Check Your Mail Connections

Last Fix:

  • Making sure that your Mac is connect to the interest
  • Try to load a page in Safari or another browser to see if the issue is the app
  • Check that the date and time is set correctly on your Mac.

Mac Mail Not Receiving Emails

Solution 1: Check Filters & Blocked Messages

  • In the Mail app on your Mac, click the Filter button at the top of the message list
  • Or choose View > Filter > Disable Message Filter.
  • You can also click and hold the Filter button, then choose Disable Message Filter from the menu that appears.
  • In the Mail app on your Mac, click the Filter button at the top of the message list
  • Or choose View > Filter > Enable Message Filter.
  • You can also click and hold the Filter button, then choose Enable Message Filter from the menu that appears.

Solution 2: Check for Problems Logging Into Email Accounts

Solution 3: Check for Problems With Firewall Software

Solution 4: Contact Your Email Account Provider

Mac Mail Downloading Messages Is Stuck

Solution 1: Temporarily Disable Email Accounts.

Solution 2: Turn off Wi-Fi & Reopen the Mail App

Solution 3: Use the Web Version of Mail App

Solution 4: Try Using a Different Email Client

What if Mac Mail Keeps Crashing?

Solution 1: Remove Problematic Mail Attachments

Solution 2: Rebuild Mail Mac

Solution 3: Disable Your Email Accounts

Solution 4: Remove and Reindex Envelope Files

  • Envelope Index-shm
  • Envelope Index-wal
  • Envelope Index

How to Delete Mail App on Mac?

The Solution: Launch the Terminal App

Why Is My SMTP Server Offline in Apple Mail & How to Fix It?

The Solution: Edit SMTP Server

What to Do if Messages Are Not Showing Up on Mac?

The Solution: Enable Text Message Forwarding

  1. It can be enabled by going to Settings apps >Messages >Text Message
  2. Then forwarding on your iPhone and turning on the switch that appears against your macOS device in the list.

Mac Mail Issues With Email Providers

Google Mail Is Not Working on Mac

Solution 1: Change Your Gmail Account’s Security Settings

Solution 2: Set Up Your Email Account Using IMAP

Last Fix:

  1. Try the “Add Other Account” option
  2. Add SMPT/IMAP info manually:
  • Incoming server:
  • Outgoing server:

Yahoo Mail Is Not Working on Mac

Solution 1: Check if Yahoo Mail Account Works Outside of Mac Mail

Solution 2: Delete and Re-Add Yahoo Mail Account

Solution 3: Check Yahoo Mail Account Settings

  • Spam folder: Check Spam folder to see if the email is incorrectly marked
  • Blocked address: The email sender may have been blocked by mistake
  • EMail Filters: Check filters if the email could have arrived in any other folder
  • Reply-to address: Make sure that your reply-to address is blank

Outlook Mail Is Not Working on Mac

Solution 1: Make Sure That Both Mac OS and Outlook Are up to Date

Solution 2: Disable the Preview Feature for Encrypted EMail

Solution 3: Make Sure That You Have the Latest Updates for Your Add-Ins

iCloud Mail Is Not Working on Mac

Solution 1: Check the System Status of iCloud Mail

Solution 2: Make Sure You That Haven’t Exceeded Your iCloud Storage Limit

  • Reduce the size of your iCloud Backup
  • Delete photos in iCloud Photos
  • Delete folders or files in iCloud Drive
  • Delete voice memos

Solution 3: Make Sure That You’re Using the Latest Version of Software on Your Device

Comcast EMail Unavailable on Mac

The Solution: Restarting the Entire Network

  1. Switch off your router or the modem.
  2. Plug out the router’s power adapter from the electrical socket and wait for about two minutes.
  3. Reconnect the router’s power adapter into the electrical socket and press the power button on the router.
  4. Check if the router is receiving the internet connection.

Sync Issues With Mac Mail

Mac Mail Is Not Working With Exchange

Solution 1: Update Mail App and Switch Off iOS Devices

  1. Update the Mail app if you don’t have the latest version.
  2. Turn off all of your iOS and iPad devices.
  3. Then turn them back on and check if your Exchange account works as intended on your Mac.
  4. If this is only a bug in the iOS or macOS update package, restarting all of your devices could fix the problem.

Solution 2: Set Up Your Exchange Account Again

  1. Launch Apple Mail, click on the Mail menu and go to Accounts.
  2. Select your Exchange account and hit the Remove button.
  3. Close the Mail App and restart your Mac.
  4. Then launch the app again, click on the Mail menu and select Add account.
  5. Select Microsoft Exchange from the list of eMail providers and follow the on-screen instructions to complete the process.

Solution 3: Start Up Your Mac in Safe Mode

  1. Enter Safe Mode by restarting your computer.
  2. Then press the Shift key while your Mac is starting up.
  3. Release the Shift key when the login window appears on the screen.

Solution 4: Create a New User Account

Solution 5: Use a Different Email App

Messages on Mac Not Updating

  • Force Restart iPhone and Mac to Fix Messages on Mac Not Updating
  • Make Sure That the Message Email Address Is True
  • Turn Off and Then Turn Message Back On
  • Sign Out and Into Messages on Mac
  • Confirm the Mobile Phone Number With Apple ID
  • Using the Same Apple ID on Mac and iPhone

Mac Mail Alternatives


  • Unified inbox
  • Filtering
  • Postpone send
  • Snooze
  • Speed reader
  • Email tracking
  • In-line reply
  • Contacts app
  • Native calendar
  • Version for Mac is under development
  • Free trial; prices starting at $39 for a Personal yearly subscription


  • Modern-looking user-interface
  • Smart inbox management
  • Built-in calendar
  • Quick replies
  • Integration with third-party apps
  • Had some privacy issues in the past
  • Free version and, $7.99/month

Newton Mail

  • Good-looking interface
  • More efficient tool to tidy inbox
  • Read receipt
  • Automatically brings back conversations
  • Comparatively expensive
  • 14-day free trial, $49.99/year


  • Good-looking interface
  • Supports Gmail, GSuite, iCloud Mail, Exchange, Office 365
  • Privacy mode
  • Offers a variety of plugins
  • Supports Touch Bar
  • Some custom actions don’t work reliably
  • Not all the plugins work as expected
  • Free version and paid version: $2.99/month


  • Easy way to manage Gmail, calendar, and contacts
  • Integrated with a number of Mac apps
  • Offers a number of keyboard shortcuts
  • Annotation tools
  • Major upgrades aren’t available for free
  • Only works with Gmail accounts
  • $29.95 for personal license and $39.95 for Family License




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