deleting blank emails with "untitled" written on the message tab

john1444 wrote:

Thank you for the suggestion. Unfortunately, it did not help. Problem remains.

If you are running any third party antivirus — try uninstalling

Uninstall all third party apps that are Cleaners/Optimizers/VPN/Anti-Virus

all known to cause issues on the macOS

especially Avast security...and mail issues.

If no resolve try  SafeBoot How to use safe mode on your Mac - Apple Support to sort anomalies.

Give this a try: boot into Safe Mode according to How to use safe mode on your Mac and test to see if the problem persists. Reboot normally and test again.

NOTE 1: Safe Mode boot can take up to 3 - 5 minutes as it's doing the following; 

• Verifies your startup disk and attempts to repair directory issues, if needed

• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)

• Prevents Startup Items and Login Items from opening automatically

• Disables user-installed fonts 

• Deletes font caches, kernel cache, and other system cache files

NOTE 2: if you have a wireless keyboard with rechargeable batteries connect it with its charging cable before booting into Safe Mode. This makes it act as a wired keyboard as will insure a successful boot into Safe Mode.

john1444 wrote:

When Mail app is opened, the normal window is overlaid with a faded blank email message. It cannot be deleted using red button, menu delete commands, or any other tool that I can think of. I can minimize it with yellow button, but it reopens any time I give a command in Mail. Sometimes it shows up with a single tab that is untitled and some times the window shows up with 2, 3, or 4 email tabs and that are each labeled "Untitled". Cannot be deleted using the "x" on the tab, red button or menu commands.

Any ideas how to fix?????

Try shutting mail down and relaunch it holding the Shift key.

Delete any emails stuck in Draft or Outbox.

Reboot again if necessary.

This worked for me. I had emails stuck in both mailboxes. Removed them, quit the application and then held shift and rebooted.

I actually think the main culprit was the outbox. Happy days - we are back to a clean slate.