The message will include the divorce certificate number and the name of the relevant court where the women can pick up the documentation.
The measure approved by the justice ministry appears aimed at curbing seemingly rampant cases of men secretly ending marriages without informing their wives, AFP said.
And from a year ago mothers in Saudi Arabia can retain custody of their children after divorce without filing lawsuits.
Flynas said it would start recruiting Saudi women to work as air hostesses by this month, in a new first while creating new job opportunities for women. In these cases, often referred to as secret divorces, women often end up missing out on alimony payments.
The move comes as Crown Prince Mohammed bin Salman has started to give women more rights in the conservative kingdom, which included lifting a ban on women driving past year.
It remains significantly easier and more friction-less, under the kingdom's heavily gender-biased laws, for a man to divorce his wife than for a woman to divorce a man.
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Women in Saudi Arabia still continue to be subjected to male guardianship laws. It controls women in each and every step of their lives.
Saudi women have only just been allowed to get behind the wheel. "This system strangles Saudi women", said Abu-Dayyeh.
Bin Salman, or MBS as he is colloquially known, was considered a reformer and a friend of the West until the murder last October in the Saudi consulate in Istanbul of Saudi journalist Jamal Khashoggi.
In November, rights groups Amnesty International and Human Rights Watch accused Saudi Arabia of torturing and sexually harassing some detained female activists - allegations denied by a Saudi official to Reuters.
Women have gained more rights since the crown prince consolidated his power a couple of years ago. Visit http://news.trust.org to see more stories.