A Tasmanian magistrate has described the behaviour of a stalker who signed his former partner up to adult sex websites as "obsessive, dangerous and malicious".

Key points: The court heard the man began stalking his former partner after the end of their six-month relationship

The court heard the man began stalking his former partner after the end of their six-month relationship In a victim impact statement the woman said she felt "mentally tortured" and was living in a "constant state of fear"

In a victim impact statement the woman said she felt "mentally tortured" and was living in a "constant state of fear" The man was sentenced to eight months' jail, suspended for five months

The Berridale man pleaded guilty in the Hobart Magistrates Court to charges relating to stalking, trespass, injury to property and breaches to an interim restraint order.

The court heard the man began stalking his former partner, who is also the mother of a two-year-old son, in April this year when she ended their six-month relationship.

The court heard the 28-year-old "immediately" began sending abusive, threatening messages, calling her "a slut, a whore and a liar".

It heard the woman received messages from 80 men inquiring about sex services after he used her photo and contact details to take out an advertisement with websites offering adult sex services.

The man also sent the woman 187 bank transfers of 1 cent each to send her threatening and abusive messages via the payment description.

In April, he drove to the woman's home where he caused $3,500 worth of damage to her car and threw items at her house, the court heard.

When police arrived, he told them he intended to "shit on her door".

He called the woman multiple times from private numbers, posted explicit photos of her on various social media platforms with her name, address and contact details and told child protection services she was a "bad mother".

The court heard he breached an interim restraint order a total of 27 times and had initially pleaded not guilty to all charges after later changing his plea.

'Very little' to excuse actions, magistrate says

A victim impact statement revealed the woman felt "mentally tortured" and was living in "a constant state of fear" as to what he might do to her, her mother and her two-year-old son.

The woman said she has suffered physical illness as a result of the harassment which has changed her life and forced her to look into relocating homes.

Despite this, the woman said she "hoped he received the treatment and rehabilitation he so desperately needs".

In his submission, defence lawyer Dinesh Loganathan told the court the man believed the pair were in love and that he "wanted to get her attention".

He told the court the man's experience in custody at Risdon Prison had been "life changing" and that he had "now learnt his lesson and was truly remorseful."

In sentencing, Magistrate Glenn Hay said the man's actions "will not be tolerated" and described his behaviour as "devious, inappropriate and totally incorrect".

"Your non-traditional means of communicating with the complainant is obsessive, dangerous and malicious," Magistrate Hay said.

"There's very little to excuse your actions and there's nothing to suggest you have any real remorse.

"Your behaviour was clearly out of an obsession that you held and a misguided revenge where you clearly intended to cause mental harm."

Magistrate Hay sentenced the man to eight months' imprisonment, suspended for five months.

He was also ordered to be the subject of an indefinite restraining order and a 12-month community corrections order.