A Cairns man intent on digging dirt on a Queensland MP has received a terse reply after an epic email fail.

The man, identified only as Karl, wanted help to dig up information about the new Labor MP for Cairns Rob Pyne, The Courier-Mail has reported.

But the email was sent to Mr Pyne himself, rather than its tended recipient, the former Liberal National Party Member for Cairns Gavin King.

The man's plan came unstuck when he emailed the Cairns electorate office.

Former MP Gavin King. (Cairns Now) (Supplied)

"Dear Gavin, I've tried to find out more about Rob Pyne's diving incident in 1991," the man wrote.

"But too many files became updated in January 2015 ... Could you please help me?"

The reply was short and sharp.

Rob Pyne. (Supplied) (Supplied)

"Dear Karl, thank you for emailing my office," Mr Pyne wrote back.

"If you require any information regarding my accident or even drink-driving offences, please have the integrity to contact me directly. Warmest Regards, Rob."

Mr Pyne admitted to a drink driving offence 25 years ago, after calls for all Labor MPs to be up front about their pasts in the wake of the controversy surrounding former Labor MP Billy Gordon.