Disabling S/MIME in Apple Mail
I'm working with someone who uses a G Suite account with Apple Mail. A prior tech had set up S/MIME for her so she could encrypt outgoing messages (this was way beyond the needs for her use case), and now she is getting certificate errors in Mail. I heard in a former episode that S/MIME is not going to be supported any longer? Beyond that she doesn't need it. Any way to simply disable S/MIME for her? Do I need to delete the certs in the keychain?
Now that I'm back at my Mac, here's a screenshot of the icons for encrypting & signing. She needs to deactivate the signing one, as indicated, which should stop mail from trying to use her certificate on outgoing messages.