Re: Can't get Mail on new MacBook Air : My Mail App will not open and quits unexpectedly. I have not tried to
use it up until today but I need to access older mail files
As the Mail app isn't working as expected:
You may want to try restarting your Mac: Eg: On your Mac, choose Apple menu > Restart.
If you haven't yet set up Mail: Apple Support have a video that may help get started with the latest Mail app, and to access those older mail files.
https://www.youtube.com/watch?v=ihhJocyLb1I
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Support Website: Eg: Learn how to set up, use, and troubleshoot Mail features,
Mail - Official Apple Support
Resource:
Mail User Guide for Mac - Apple Support