MARY MacKillop, who will soon become Australia's first saint, is about to be launched into cyberspace.

The Mary MacKillop website, which will provide details of the Melbourne-born nun's life and legacy through video, audio and artworks, goes live tomorrow.

Last month Pope Benedict XVI announced that Mother Mary, founder of the Sisters of St Joseph, will be canonised in Rome on October 17.

A flurry of publicity is under way in the lead-up to that date, including the launch on Friday of a collection of letters Mother Mary wrote and received in her last two decades.

In addition, an agreement signed on Wednesday will ensure that her original grave site at Gore Hill Cemetery in northern Sydney is restored, as requested by Sydney Archbishop Cardinal George Pell.

Born in Melbourne in 1842, Mary MacKillop founded the Sisters of St Joseph in South Australia and the first Josephite school in 1866.

She died in 1909, aged 67, in a convent in North Sydney.

Five years after her death, her remains were relocated to their current site in North Sydney at the Mary MacKillop Memorial Chapel.