Of course, no one has said they aren’t real/accurate.
Presumably, the NSA has the complete electronic record of emails and texts available to them to review corruption in our government and their mission is to safeguard America.
"Mission Statement
The National Security Agency/Central Security Service (NSA/CSS) leads the U.S. Government in cryptology that encompasses both Signals Intelligence (SIGINT) and Information Assurance (IA) products and services, and enables Computer Network Operations (CNO) in order to gain a decision advantage for the Nation and our allies under all circumstances.
Core Values
Honesty - We recognize that national leaders and the American people at large have placed great trust in us, and we strive at all times to be deserving of that trust. We will be truthful with each other, and honor the public's need for openness, balanced against national security interests.
Respect for the Law - Everything that we undertake in our missions is grounded in our adherence to the U.S. Constitution and compliance with U.S. laws and regulations that govern our activities.
Integrity - We recognize that national leaders and the American people at large have placed great trust in us, and we strive at all times to be deserving of that trust. We will behave honorably and apply good judgment as we would if our activities were under intense public scrutiny.
Transparency - We embrace transparency to the fullest extent possible. We never forget that we, too, are Americans and that every activity we engage in is aimed at ensuring the safety, security, and liberty of our fellow citizens.