When creating a new email address (mailbox) on Plesk 7.0.3 for Windows, you will recieve a default email in the mailbox. This default email is stored in the following locations:
System default: C:\Program Files\SWsoft\Plesk\Mail Enable\Config\Postoffices
Domain default: C:\Program Files\SWsoft\Plesk\Mail Enable\Config\Postoffices\<domainname>
To alter the email is very easy. All you need to do is to create the email message as you would like it to appear to your clients and then send it to one of the defined email addresses on the system. You will be able to retrieve the email from the location below.
Email file locaton: C:\Program Files\SWsoft\Plesk\Mail Enable\Postoffices\<domainname>\MAILROOT\<mailbox>\Inbox\*.MAI