When the PeopleVine platform sends out notification templates it will look for a default wrapper to apply your company's branding on the outgoing email. Follow these directions to set it up:
In your master company account, go to Connect and click New Newsletter Layout
Setup your layout with your design, but do not set it as the default template (unless you're using it for your own personal marketing).
Identify the newsletter_style_no and you will now place this in the web.config file for your instance as such:
<add key="newsletter_style_no" value="2"/>
Once this is set, PeopleVine will use this template to wrap every outgoing system notification.