Resolution

Go to Delivery Definitions, by navigating to System Administration>Printer/Device Administration>ReadyForms>Delivery Definitions
Browse or search for the delivery definition needing to be updated
From the list of steps, select the step is responsible for emailing the form
Hit Update, then select the Email Tokens button next to the step's options
Find the variable you are looking to use in your email, and make note of how it's called
1. for example: [*FIRST_NAME*]
Scroll down to the email subject and body settings, and add the variable to your email template
Select Accept at the top of the screen to save these settings

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