Incident Email Signature

We just got our own on Prem instance of ServiceNow after using a leased instance from Frontline. In the leased instance, when sending an email from within an incident, our names and titles were pre-populated as a "footer" in the email. In other words, pre-populated at the bottom of the body of the email. In our on-prem instance this is not set up, and I have not been able to find how to add this to that particular email template. If someone can point me to the name of that template I am pretty sure I can change it so it does the same thing. I don't want it going out on EVERY email, just the emails that are created when we email the requester from within the incident.