ProPublica is a non-profit corporation based in New York City. They published an article in 2013 that confirms the legitimacy of these newly discovered EPA emails involving Heather Podesta.
Original thread: https://voat.co/v/pizzagate/1716158
"Podesta -- the sister-in-law of John Podesta, who co-chaired President Obama's transition team -- appealed directly to the EPA's second in command, Bob Perciasepe, pressing the agency's highest-level administrators to get directly involved and bring the agency's local staff in Texas back to the table to reconsider their position, according to emails obtained by ProPublica through the Freedom of Information Act."
(more detailed than old thread) PDF version: Link