I agree that it would be nice to select a specific footer, including the ability to format the text.
The default email footer for in-form follow-up emails is oddly spaced:
Company Name
Street address
City
State
Zip
Phone
I feel that the formatting could, at least, put the City, State, and Zip on the same line. It’s odd seeing a state’s two-letter abbreviation (e.g. “CA”) on its own.