A self-proclaimed 'crack lord' who was caught bragging about her empire in tapped phone calls has launched an appeal against her prison sentence.

Mother-of-three Rebecca Teresa Castner, 42, was sentenced to ten-years in jail for drug smuggling across Queensland's Sunshine Coast last year, after police tapped her phone calls.

But on Tuesday, she launched an appeal for a reduction in her sentence, saying that the court didn't take into account a 'troubled upbringing'.

Phone calls tapped by police caught Rebecca Castner (pictured) bragging about her drug empire, which saw her net more than $3.26million in a six-month period

It was ultimately police tapping her phone calls that caught her in the act.

'Being a crack lord is an easy life,' the Courier-Mail reported Castner said during an intercepted phone call.

'They'll never catch me... We were making so much money we couldn't spend it.'

But she now says that her sentence is too harsh.

Castner's barrister, Daniel Caruana, cited a 'high level of remorse, tied with a low likelihood of reoffending' as reason for a reduction in her sentence.

He's said that recent sessions between Castner and a psychologist contrasted with how the court had painted her.

At sentencing a year ago, Justice Helen Bowskill said Castner used violence and intimidation to ensure customers paid what they owed.

Mr Caruana also said Castner had a troubled upbringing, which wasn't taken into account at sentencing.

Castner (middle) has launched an appeal against her sentence, saying that the ten-years handed down to her are too harsh and don't take into account a troubled upbringing

The appeal court has reserved its decision. Caster (pictured), self-proclaimed 'drug dealing king of Buderim' is not eligible for parole for another seven years

Prosecutor David Finch said that Castner had become arrogant of her ice empire, which turned over $3.26million in a span of six months.

Castner is currently not eligible for parole until she has served eight years of her sentence.

The appeal court reserved its decision.