Canada Post on Wednesday claimed victory in a seven-year-old NAFTA challenge launched against it by U.S. courier company UPS.

UPS sued Canada for $230 million, arguing that Canada Post has an unfair advantage because it uses the public postal system to support its own courier business.

"To put things in context, this dispute was about money," said Canada Post CEO and president Moya Greene.

"The United Parcel Service of America is attempting to force postal administrations around the world out of the parcel and courier business in order to increase their market share," she said in a release.

A UPS spokesman said the company was disappointed by the ruling, but added that it would respect the NAFTA decision.

"Our primary motivation in this whole case was to develop and promote a level playing field here in Canada along the lines of the courier market," said Greg Kane.

With files from the Canadian Press