Create an email box in Plesk
This article explains how to create a new email box in the Plesk interface used by the Shared, Dedicated and Cloud Hosting products.
Steps
Login to your Plesk panel and click Mail
Click Create Email Address
Enter an Email address
Enter a Password or let Plesk Generate you a strong password (be sure to click Show and save the password Plesk generates)
Click OK
You have successfully created a new email box. It should accessible immediately