You're referring to Bill Still reporting an email he received after the now infamous Matt Lauer interview with Shrillery. I believe that email was real but you have to take Bill Still with a grain of salt. He's been fooled before and anyone could have written him that email. Yes he does say it came from an NBC email address. Like I said it's most likely real but not unassailable.

https://www.youtube.com/watch?v=_NfFAaPZqs8

rule 4. no sources.

and Treason