I’d guess he has workers doing some of that emailing/fundraising stuff.
He may write the material but he should be using his time for other things, imo.
I have no idea if he’s been seen or not. I looked at the House voting records
and they only go thru the 19th. He missed votes from the 9th to the 19th so
that may have been the time he was on the trip.
Compare his record to others listed as going on trip