You want to use Mail Forwards?
The Mail Forwards feature allows only to receive mails, sent to email@example.com in your real mail box.
To set up Mail Forwards, the DNS Zone needs to have MX records, pointed to the mail forwards servers that can be seen in the Control Panel.
After you create the MX records, click on the "Mail Forwards" button, located between "Cloud Domains" and "DNS Statistics" buttons in your DNS Zone Control Panel. Click on “Add new forward”. In the “Mail box” field write mail box where you will be the addressee (for example: firstname.lastname@example.org or email@example.com, etc.). In “Forward to” box add the e-mail address where you will receive the mails, sent to firstname.lastname@example.org or email@example.com, etc.