Removing WebMail Email from Mac Mail
This article will go over removing a webmail email from Mac mail, please note the process may differ depending on the mail client or mail client version.
Go to the Mac Mail app by clicking on the Mail icon
On the top left hand side of the screen click on "Mail" and click on "Accounts"
Click on your WebMail account
Find your WebMail email and click "Delete Account"
Select "Ok" to remove the account