The former Queensland mayor who was sent to jail in 2019 for extortion has had his appeal dismissed.

Paul Pisasale, who was mayor of Ipswich from 2004 to 2017, was imprisoned for two years after being found guilty of impersonating a private investigator to take up to $10,000 from a Sydney taxi driver.

He, along with co-accuses Cameron McKenzie and Yutian Li, have all had their appeals dismissed in the Brisbane Court of Appeal today.

Paul Pisasale outside court (AAP)

Pisasale formed a friendship with Li, a Chinese national working as an escort in 2017.

Li wanted Pisasale to investigate Sydney taxi driver Xin Li, who she allegedly have a romantic relationship with before she found out he was married.

Pisasale made a number of phone calls to the taxi driver in early 2017 claiming he was an investigator.

He threatened legal action and tried to swindle up to $10,000 from him.

The then-mayor also got his friend and solicitor, Cameron McKenzie, to send Mr Li a letter demanding $8400.

Three judges dismissed the appeals of the trio, who were not in the court today.