<span style="color: #222222;">Canada's postal service issued a plea yesterday for the rest of the world to stop sending in mail as its striking workers rejected the latest contract offer.</span><br />'' <br />'' <span style="color: #222222;">Canada Post, facing a huge delivery backlog as the labour unrest looked set to enter a fifth week, recently sweetened its offer to staff in a last-ditch effort to bring the rotating strikes to an end.</span><br />'' <br />'' <span style="color: #222222;">This followed a warning from Prime Minister Justin Trudeau that his government was prepared to step in to settle the labour dispute ahead of the upcoming holiday season.</span><br />'' <br />'' <span style="color: #222222;">Canadian  government has faced pressure from online retailers including eBay to legislate an end to the strike before the Black Friday and Cyber Monday sales events, which start on November 23.</span><br />'' <br />'' <span style="color: #222222;">In Toronto alone, a record 260 trailers of parcels and packets were waiting to be unloaded, while in Vancouver more than 100 trailers were parked outside its plant.</span><br />'' <br />'' <span style="color: #222222;">Canada Post delivers two-thirds of the nation's online shopping and the last six weeks of the year are its busiest due to the holiday rush. </span><br />