Users complete their personal and professional contact information in their profile on the website. They can then aggregate the contacts from all their messaging services in their address book, and invite these contacts to complete their own profile on the website. When information is edited by a user, that information automatically appears in his contacts’ address books, and vice versa. Contrary to other sites, the user's contacts are not visible to other users.
The company has been in business since 2005 and has recently announced that it has reached 31 million users and more than a billion managed contacts on the site. Unyk.com was an independent company that was financed by private capital, until October 2009, when it was bought by the social network Viadeo. They announced in early 2012 that UNYK had been fully integrated into Viadeo. The unyk.com website lands at a parking page as of December 2018.
- « Canadian Start-Up UNYK.com Celebrates its 2nd Birthday with 6 Million Unique Users and 150 Million Contacts », Yahoo Finance, September 9, 2007
- « Unyk rolls out address book toolbar», Montreal Gazette, Technocité blog, October 10, 2007.
- (in French) Fatima Hazene, « Viadeo rachète le canadien Unyk» Archived 2010-01-10 at the Wayback Machine, CBNEWS, 14
- "UNYK.com Facebook page". January 25, 2012. Retrieved December 15, 2018.