The Associated Press reported in March that Manafort had asked Deripaska to work with him in 2005 on a project Manafort said would "greatly benefit the Putin Government". Rather, Manafort and his employee, Konstantin Kilimnik, took great measures to hide Deripaska's identity in the emails.
"There is no evidence the briefings happened but strong suggestion of attempt & conspiracy at a minimum for quid pro quo public corruption", Joyce Alene, a University of Alabama Law Professor who occasionally appears on MSNBC, tweeted.
"The email exchanges add to an already perilous legal situation for Manafort, whose real estate dealings and overseas bank accounts are of intense interest for [special counsel Robert] Mueller and congressional investigators as part of their examination of Russia's 2016 efforts, " The Post said.
There's been no confirmation that the Russian oligarch and close ally of Vladimir Putin received the emails, which are now in special counsel Robert Mueller's possession, but the communications are written in suspect, likely coded language.
There are three key emails described in the Post story. In another, one that has people on social media today laughing, "Kilimnik wrote in the July 29 email that he had met that day with the person 'who gave you the biggest black caviar jar several years ago, ' according to the people familiar with the exchange".
Manafort told NBC News in August of 2016 that the matter was closed.
Manafort spokesperson Jason Maloni told the Post that no briefings occurred and characterized the email as simply an offer for a "routine" briefing on the state of the campaign.
So by the time Manafort was on the Trump campaign, he seems to have been trying to figure out how to fix his relationship with Deripaska.
The question is what happened next. In a 2014 Cayman Island court case, Deripaska accused Manafort of taking almost $19 million that was to be used for investments and failing to account for the money, return it, or respond to inquiries as to how exactly it was used.