It doesn't matter the reason, even if the email stated "Reply All." It happened and the reason is irrelevant.

There is underhanded dealing everywhere AND it all involves Russia's sanctions due to it's highly international illegal (treaty violations) invasion into Ukraine. The sanctions work, otherwise, Russia would not be moaning and groaning so much.

9 November 2018
by Peter Stone

A Russian man (click here) who is said to have ties to Moscow’s intelligence services will be receiving renewed scrutiny from special counsel Robert Mueller’s inquiry into Russian 2016 election interference, according to former federal prosecutors.

Mueller is investigating Konstantin Kilimnik with assistance from three Kilimnik associates, including Donald Trump’s former campaign chairman Paul Manafort, who mentored Kilimnik as a political operative for pro-Kremlin figures in Ukraine.

Kilimnik, an elusive 48-year-old, has already been charged by Mueller with witness tampering. His most recent business partner has been charged with illegally funneling $50,000 from a wealthy Ukrainian into Trump’s inauguration fund.

Kilimnik was also caught up in Manafort’s apparent intentions in 2016 to use his position at Trump’s side to settle multimillion-dollar debts claimed by their ex-client Oleg Deripaska, an oligarch close to Vladimir Putin, the Russian president....