Answer
In the Mail program on your Mac, go to Preferences > Accounts and click it. Select a user account and then hit the Remove button. Note: If other programs on your Mac utilize this account, you’ll be prompted to delete it from Internet Accounts System Preferences.
How to Add-Remove Email Accounts from Apple Mail
How To Delete Or Remove Email Account In Apple Mac Mail
Why can’t I delete a mailbox on my Mac?You could consider highlighting the Mailbox in question by going to the Toolbar, selecting “Mailbox,” then clicking on “Rebuild” from the drop-down menu. Continue to delete the mailbox – right-click or ctrl-click on it and select Delete from the menu when prompted.
How do I delete an email address from my Mac?Select Window > Previous Recipients in the Mail app on your Mac. Locate the address you wish to remove. You may search for it or sort the list by clicking a column header. Remove From List is the option to choose.
How do I remove an account from my Macbook Pro?Select the Login Options tab, then deselect Allow Users to Log In Automatically. If you’ve previously enabled users to log in automatically, turn it off; otherwise, leave it on. Select your user or group from the drop-down menu below the list of users and then choose Delete (looks like a minus sign) from the drop-down menu beside it.
How do I remove Gmail accounts from my computer?Remove all of your accounts. Then, when you visit Gmail, it will request that you login in and pick from your existing accounts. Below is a button to add an account or remove one. Remove the undesirable account by selecting the red (-) at the bottom of the page and then clicking Remove Account.
Why can’t I delete a user account on my Mac?Make sure the user account you want to delete isn’t the only administrator account on the computer. If only one administrator account exists on the computer, you cannot remove it; instead, you must either convert one of the other accounts to an administrator status or establish a new adminisatration account and then delete the original.