Here is the email, notice the hard returns on short phrases, looks to be forcing certain capital letters on each line:

Really interesting Very happy I came Brian and rudy have been very inclusive Loved hanging out with carol and jim mattis and caroline Never been to UAE before Very smart very sophisticated people Met vert senior people Just arrived Jordan Much lower level Tho general nera and rudy only seeing king Dining with ambassador then on to Israel

Capital letters spell RVBLNVMJMTD.

This is from the same "pizza for an hour" email thread, notice if you scroll down a bit:

"Would love to get a pizza for an hour?"