Canada Post says that it never reaches out to users about a delivery via text or email unless it has been requested to.

Canadians face a fresh wave of scams as fraudsters seize on the Canada Post strike to try to trick victims out of their cash. The last few weeks have seen an “exponential” rise in attempted fraud, ranging from phishing emails to deepfake phone calls, says Octavia Howell, chief information security officer at Equifax Canada.

It's been over two weeks since a nationwide strike of Canada Post workers began, with no end in sight to the ongoing negotiations.And according to the Canadian Federation of Independent Business (CFIB),

The U.S. Postal Service has temporarily suspended accepting mail headed to Canada due to the strike by Canada Post workers.