Enable Mail Aliases in Plesk

• Log into Plesk Panel
  Go to your Plesk login page and enter your username and password.

• From the left sidebar, click on Email .

•  On the settings page, look for the option Mail aliases.

•  In the input field, type the alias addresses you want to add . (e.g., sales@yourdomain.com , tech@yourdomain.com )

Note: ---
You can add multiple Email aliases  

The email account can receive, but it cannot send new emails.

• Click OK or Apply to save the changes .