I built a function to grab specific people picker fields and generate their emails in a variable that I then call via {var:myEmailVar}. It works but there are some users where it will not generate the email (maybe something with either their browser, network config or domain settings)…actually may be part of the doc lib folder rename issue I mentioned earlier in the vLookup thread.
In my debugging it looks like dffs already does an email scrape from people picker fields. I wanted to confirm and if so I would assume that would be a better approach to my current function.