Your default email account is listed under Default Email Account. It is a special email account which is made when your cPanel account created by your web host. The username and password in this account are the same as the username and password of your cPanel account.
Depends on your web host setup, this email address can be functioned as “catch-all” to all emails which sent to invalid username (wrong username) to your domain. You will receive spam in multitudes because of it.
Default address can’t be deleted or changed its name, and no quota. Therefore, default address can’t be used to send email. For this reason, we suggest you to create email account for daily use.