How do I fully delete an email account from my Apple Mail app on my iMac?

Question

Hello all,
How do I fully delete an email account from my Apple Mail app on my iMac?
When I go here: Mail > Preferences Mail > Accounts
I got the message that I needed to delete it from my Internet Accounts.
When I go here: System Preferences > Internet Accounts > select the account >
I cannot select or click the minus sign on the bottom left to delete the account because it does not appear in the list.
Yet the email account still shows up in my email logs with errors that it cannot connect.
The email account no longer appears in the left column where all my email accounts are in Apple Mail as I have deleted that domain and no longer use it, so the email was deleted at the server level. However, again, the email account still shows up in my email logs with errors that it cannot connect.
This is driving me bananas!
Thank you for any help you can provide!
~ Angela

Answer 1

If you haven't already done so, please quit and relaunch Mail. See whether the account goes away.