Client would like to insert the Constituent's Casual Salutation specifically into the Thank You autoresponder sent after a donation is made. In looking at the list if s tags it looks like that one is assigned to the honorific (Ms., Mrs., etc.) I'm looking for the Constituent record info that is listed under Salutation(casual) which in my record would be "Julie and Paul"
You can use S1 tag to accomplish this. Please refer to this article for more information
The correct stag to use is [[S1:Salutation_casual]]. This pulls the data in the 'Salutation (Casual)' field under the Biographical Information section of the Constituent Profile Record.