I use Canada Post Lettermail for all orders as this is the most effective and cheapest solution for you.  As of Tuesday December 17th, the Canada Post strike has ended and post offices are now open again.  Mail is once again being accepted into the system - HOWEVER... 

Now that service is restored, we are well into the throws of holiday mail and a huge backup of undelivered mail. All orders placed right up until December 20th will be fulfilled and dropped at the Post Office no later than the 20th (Last day for mail before Christmas), but will likely experience longer than expected shipping times, and could quite possibly not arrive until the new year. 

Mailings done from Dec 26th to Jan 15th will likely take until Mid January to arrive. There is NO tracking or guaranteed delivery transit time available on letter mail.  If you require guaranteed and timely delivery I can offer Express Post or courier starting at about $20 CAD within Canada, $39 to the US.