Any follow-up messages between the two members are free after the communication has been initiated.
Ashley Madison also has a real-time chat feature where credits buy a certain time allotment.
In 2015, the Ontario Superior Court dismissed the case without costs, a result with which Avi Weisman, vice-president and general counsel for Avid Life Media, said the company was "very pleased".
Ashley Madison later alleged further that Silva had kept confidential documents and sought to retrieve them.
She had previously released an analysis purporting to show that only a minuscule proportion (12,000 out of 5.5 million) registered female accounts were used on a regular basis, Newitz noted a clause in the terms of service which states that some accounts are for amusement purposes only.
She says Ashley Madison does not go so far as to say they are fake, but "does admit that many profiles are for 'amusement only' ".
More data (including some of the CEO's emails) was released on August 20, 2015.
The release included data from customers who had previously paid a fee to Ashley Madison to supposedly have their data deleted.