How To Fix Mac Mail Error 1030?

Mac Mail Error 1030

When you launch the Mail app on your Mac computer and try to move or delete the emails from your email account, you may face the Mac Mail error 1030. The error message will also notify you that the operation could not be done. There is no particular reason for this error. Many users have come across this error in the Mail app. This could well be a system software bug on your Mac. Here, we provide a few solutions to fix the error. 

Solution-1: Reconfigure the SMTP settings

  • Step : 1 Launch the Mail app, open the Preferences window, and double-click the Account icon.
  • Step : 2 Select the Mail account in which you face the error and click the Outgoing Mail Server (SMTP).
  • Step : 3 Next, you have to select Edit SMTP Server List and click the Advanced tab.
  • Step : 4 Again, fill in the email address and password for the SMTP authentication, choose an authentication type from the drop-down menu, enter the correct SMTP port number, and finally, click OK.
  • Step : 5 Close the Mail app, restart the app, and move or delete an email to check if the error has been fixed.

Solution-2: Fix the error manually

  • Step : 1 Close the Mail app and other apps using the mail account service on the Mac device.
  • Step : 2 Now, press the Command, Shift, and G keys together and enter “~/Library/Mail/V2/MailData” in the search box to navigate to the location.
  • Step : 3 Locate the file ‘Accounts.plist’ and create a backup of the file.
  • Step : 4 If you lose data or did not execute the code properly, you can use the backup file to restore the original state.
  • Step : 5 Open the file using the Text Editor, search for “UserAllowInsecureAuthentication” from the codes. In the next line, replace with .
  • Step : 6 Save the file and close it. Restart the computer and see if the error has been fixed.
  • Step : 7 By using these above steps to fix mac mail error 1030.
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