A member of the National Rifle Association with ​Kremlin ​connections contacted the Trump campaign last year about setting up a meeting between Russian President Vladimir Putin and the Republican then-candidate, a report said Sunday.

“Putin is deadly serious about building a good relationship with Mr. Trump,” Paul Erickson wrote in the May 2016 email to campaign adviser Rick Dearborn, according to the New York Times.

The email ​included the subject line: “Kremlin Connection.”

“He wants to extend an invitation to Mr. Trump to visit him in the Kremlin before the election. Let’s talk through what has transpired and Senator Sessions’s advice on how to proceed,” wrote Erickson​, a conservative operative, referring to then-Sen. Jeff Sessions, a foreign policy adviser to Trump.

Sessions is now the US attorney general.

Erickson in the email wrote that Russia was “quietly but actively seeking a dialogue with the US” and wanted to use the NRA’s annual convention in Louisville, Ky., as a “first contact.”

Erickson has a close connection to Alexander Torshin, a top player in Putin’s United Russia party.

​The outreach predated special counsel Robert Mueller’s investigation into Russian interference in the election. ​

At the same time, Russian representatives were reaching out to the campaign through an American advocate for Christian and veterans causes, the newspaper said, as the Kremlin tried to exploit the traditional Republican mainstays of guns, veterans and Christian conservatives.

The report said it’s unclear how Dearborn handled the request from Erickson.

But he sent the other request to Trump’s son-in-law and top campaign aide Jared Kushner.

Kushner, according to the report, rejected the idea.

Sessions told House investigators he doesn’t remember the email, which was among a number of documents turned over to investigators on Capitol Hill.

Dearborn did not respond to requests for comment and White House lawyer Ty Cobb declined to comment.

Erickson could not be reached, the Times said.