Your admin account normally uses a ‘regular’ email account, eg gmail, yahoo, just like any other regular user account. Use that for password resets, email notifications and account verification of your admin user. Do not confuse that with site email contacts for third parties. That’s a special domain specific email address and is not usually used to manage a specific user account. Perhaps you can do it, but that’s kind of over complicating things, more fragile and is unnecessary.