Clint Leigh Elford is accused of fleecing the American International Assurance Company out of $525,000.

The 27-year-old appeared via video link-up from Goulburn jail yesterday.

He also faces a fresh charge of trying to send a document threatening death or grievous bodily harm. It is alleged the letter, found by corrective services staff at Goulburn jail, was to a member of an outlaw motorcycle gang and made threats against the former Sharks boss Tony Zappia.

NSW public prosecutor Chris Toole said a brief of evidence regarding the threatening letter charge was nearly finished.

Leslie Alma Elford, 52, and Graham Norman Elford, 58, appeared in person.

They were charged on June 19 in Goulburn with recklessly dealing with the proceeds of crime.

The three will reappear in court on September 16.

No pleas were entered, but Magistrate Geraldine Beattie said a plea needed to be entered over the threatening letter charge when Clint Elford next appeared in court.

Elford did not speak to the court except to answer simple questions from Magistrate Beattie.

He did not apply for bail, and remains in custody at Goulburn jail.

Elford's parents remain on strict conditional bail.

Outside the court a teary Leslie Elford refused to answer reporters' questions.

Clint Elford has also been charged with an alleged attempt to claim $1.5million from another insurance company, and with knowingly dealing with the proceeds of crime and intent to conceal.

He reportedly donated $30,000 from a fraudulently obtained life insurance payout to the Cronulla Sharks.

Tony Zappia recently stood down as the Cronulla chief executive officer amid allegations of workplace misconduct. Louis Andrews