I'm having a strange problem.
I've got email coming through, and can send, but on both of my Macs, one sunning Big Sur, the other on Monterey Beta, there seems to be no way to add a "From:" name - i.e. my full name. Mail comes through without one at all.
In Mail > Preferences > Accounts, in the Email Address dropdown, it simply lists the email address: "
mail@domain.com", not "First Last <
mail@domain.com>".
Clicking "Edit Email Addresses" takes me to iCloud.com where I can input a Full Name, but this doesn't seem to have any effect on the Mail.app…?