What is who.eop.gov?

Answer 1

It is the email domain for people who work in the White House. EOP stands for Executive Office of the President; WHO stands for "White House Office." There are many email domains within the Executive Office of the President, including, for example, the Office of the US Trade Representative (ustr.eop.gov) and the Office of Management and Budget (omb.eop.gov). WHO distinguishes it from these other offices, and is designated specifically to people who work in the White House Office.