The Per-Level Emails add-on for Restrict Content Pro allows you to customize the content of the notification emails for each individual membership level.
Installing The Restrict Past Content Add-On
This add-on requires Restrict Content Pro.
Configuring The Per-Level Emails Add-On
Unless overridden, each email that gets sent out will use the content you've specified in the normal Restrict Content Pro settings Restrict> Settings> Emails. To change the contents for a specific level, go to Restrict > Membership Levels and hover over a level. You'll see a new link for "Configure Emails".
After clicking "Configure Emails" you'll be taken to a new page that lists all the email templates applicable to this level.
To customize a template, simply fill out the subject and/or message field with new content.
If an email subject and/or message is blank, then the default email contents from Restrict > Settings > Emails will be used.