Mail screen won't close
I am setting up my new MacBook and for one of my mail accounts, I was unable to remember the password and decided I really no longer need that mail account on my computer, so I deleted the account, but the verification screen for the email just dulled and I cannot close it. It will not release my mail app in order to shut down my computer. What do I do to get rid of this verification screen?
MacBook Pro 13″, macOS 13.0