How to Force Close Mail on a MacBook (5 Steps)

Click outside of the Mail portion of the screen, somewhere on the desktop, to open Finder. Finder is always running under your other programs, so any problem with Mail won't prevent you from using Finder.
Click on the Apple logo at the top of the screen.
Select 'Force Quit' from the drop-down menu.
Highlight Mail in the pop-up window. If Mail is red and marked 'not responding' you likely have a problem. If the text is black and not otherwise marked, you may want to wait a minute to see if the problem fixes itself.
Click on the 'Force Quit' button to close Mail. You may re-open Mail after the program is forced closed.
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