Taxpayers Union director Jordan Williams' personal email address was connected to an anonymous website backing Judith Collins for the National Party leadership, information provided to Stuff shows.

Williams said he was not behind the website on Monday and continues to deny it on Tuesday, instead suggesting that he is the victim of an elaborate smear.

The website appeared and was then deleted on Monday. It had a domain registered to a fake phone number and the name and email address of a "Raquel Ray." This appears to be a fake identity.

CAMERON BURNELL/STUFF. Judith Collins announces her run for National Party Leader

There are no online or property records linked to a "Raquel Ray" save for a recently setup Facebook account using a stolen photo and a smattering of OIA requests to Callaghan Innovation.

READ MORE: Anonymous 'Back Judith' website has fake phone number

Williams said the Taxpayers Union had a "Raquel Ray" in its records as someone who had sent in tip-offs but ruled out any involvement from him or his staff.

"They're in our database and have sent through a bunch of tips in the past," Williams told Stuff on Monday.

"Otherwise we have absolutely no association and are not taking a position in this.

"It's definitely not come from within."

A screenshot provided to Stuff shows the Raquel Ray email address that was used to set-up the website has Williams' personal email set as its password recovery email.

The last five letters of the email address are starred out but perfectly match Williams' personal email address. He later confirmed he had received a message to that address concerning password recovery.

However, there is nothing to stop the person who controls the Raquel Ray account setting the account recovery address as Williams - there is no verification process.

Reached on Tuesday, Williams said that this "can't be right".

"I did get a password reset email randomly last night," Williams said.

He confirmed he had no involvement with Raquel Ray - other than that email had sent in tip-offs to the Taxpayers Union in the past. He declined to immediately forward that correspondence on to Stuff.

After searching his inbox Williams said that he received an email to his personal address early on Tuesday morning saying his email had been added as the recovery address to the Raquel Ray account.

He declined to forward this on to Stuff, saying he wanted to get advice on that first.

"I'm very worried that this is some sort of setup," Williams said.

He said his personal email address was available easily online and so it wouldn't be that hard for someone to set him up in this manner.

Williams and his organisation maintain that they are politically independent.