A Default (catchall) email account will accept any email that is sent to a non-existant email address linked to your domain.
To create a Default (catchall) email account, first you need to login to your cPanel account and then follow this guide.
1. Click on the 'Default Address' icon, which can be found in the Mail section of your cPanel home screen.
2. If you have multiple domains listed, first please ensure that you select the correct domain from the drop down titled 'Send all unrouted e-mail for:'
3. Ensure that 'Forward to email address' is selected and in the text box enter the email address you want to use as your default email.
Note: Initially, your default POP address is set as your catchall account.
4. Then click the 'Change' button to set the new default address.