Mail keeps crashing after upgrade to Ventura OS

Hello 1136BigB,

Thank you for reaching out to Apple Support Communities, and we'll be happy to help in any way we can. We understand you're having issues with Mail on your Mac. If Mail is crashing, try the steps here to resolve the issue: If an app freezes or quits unexpectedly on Mac - Apple Support

"When an app on your Mac stops working, try these suggestions.

• If an app doesn’t quit as expected, or it’s unresponsive, you can force quit the app (you may lose unsaved changes). Choose Apple menu  > Force Quit, select the app in the dialog that appears, then click Force Quit.
• If the app quit, reopen it by clicking Reopen in the dialog that appears.
• Restart your Mac by choosing Apple menu > Restart.
• Make sure the app is compatible with your version of macOS.
• Open another file in the app. There may be a problem with the original file.
• Check for updates to your software.
• Disconnect any peripheral devices you just connected (for example, a printer). They may not be compatible with your version of macOS.
• Uninstall any app plug-ins or enhancements from other manufacturers.
• If you recently updated the app or macOS, a plug-in or enhancement you installed may no longer be compatible.
• Diagnose problems with your Mac to learn whether hardware you installed, such as additional memory, is incompatible, improperly installed, or defective."

If you also have issues sending and receiving mail, try the steps here as well: Troubleshoot email problems in Mail on Mac - Apple Support

We hope this helps.

Cheers!

Hey 1136BigB,

Does this issue persist in safe mode? How to use safe mode on your Mac. If it doesn't, restart after testing in safe mode and then test again. Sometimes just starting in safe mode and restarting can resolve interface issues.  If your issue persists in safe mode, please follow this article in creating a new user to test and see if the issue is resolved there: Set up users, guests, and groups on Mac. This can help tell us if the issue is related to certain settings in your account conflicting with the Mail app. 

Keep us updated!

1136BigB,

Thanks for the additional information regarding your Mail app crashing issue with your Cox email. We know how important this is for you and we will do everything we can to get this resolved.

Since the issue seems system-wide, then the next step is to reinstall the macOS. This step can resolve issues like this. Don't worry all of your data will be OK, this just reinstalls the macOS over top of the existing one:

• How to reinstall macOS - Apple Support

Farewell!

Hi 1136BigB,

Contacting Apple Support is the best path forward to resolve this issue. They will be best equipped to address this:

Contact - Official Apple Support

Cheers!

I had similar issues and found that the problem was with the email service itself. Have you confirmed that your cox account settings are correct and matching on all devices?