In dynamic naming the only recipient field you can use is "full name".
You could also insert a QlikView variable whose value could be set to change for each recipient by building an NPrinting "variable" filter which does that; see:
Thought as much - the name of the recipient isn't actually part of the Qlik Dashboard, it's referencing a Depot number, but producing for a given list of people, we may end up just loading a list into the report to pull back the value but hoped we could use the same functionality used within the emails!
Is there any chance that can get noted down as a request for the next version? Would be extremely handy to be able to choose a different field, especially if we can use the Custom fields.