With notices rolling out across the country to announce the end of service, the Canadian Union of Postal Workers, along with groups representing seniors and the disabled, are launching a Federal Court challenge to try to maintain it.
"The reaction was immediate from every part of this country … seniors, people with disabilities were against it and demand that door-to-door delivery be maintained," said Denis Lemelin, the union's national president, at a press conference in Ottawa Thursday.
Lemelin said the December 2013 decision, which was supported by the Harper government, was announced without prior consultation with the public or postal workers.
"You saw the reaction," Lemelin said. "Today we want to thank the people of this country, because people care about the postal service, and that's the most important thing."
"Postal service is here to stay," he said, vowing to maintain a "public post office" as well as home delivery.
Lemelin said that 110 municipalities across Canada have expressed their opposition to ending home mail delivery.
The labour movement and the NDP have been canvassing across Canada with petitions to maintain the service.
The challenge will be filed in the Federal Court, arguing the termination amounts to a violation of the Charter of Rights and Freedoms.
The union also believes this decision is beyond Canada Post's authority and should be made by Parliament, which created Canada Post and defined its mandate.
If the service is terminated as announced, Canada will be the only G7 country without home mail delivery, the union says.
ALSO ON HUFFPOST: