Login into your hosting providers control panel.
Access your Email accounts cpanel feature.
If you have not created, a email account with your cpanel. You can do so at this time.
Access your Webmail.
Make sure to Click "Show all mailboxes".
That is it.
Some people forget to click "Show all mailboxes", and start to think that the email address is not working. When in fact it is.
- The opinions in this post are mine, and not necessarily the opinions of the companies I work at or with.