Canadian Mail on strike, how do I know I will get my Parcel?

Well it would appear that it is now much more than a strike...it's a lockout. So to the best of my knowledge, there is no mail delivery anywhere in Canada. The federal government however has placed legislation on the table, to be debated Monday, which if passed, will order all Canada Post workers back to work. I suspect that given our new majority government, the legislation will pass with no problem, so this strike (lockout) will likely not last very much longer. But to specifically answer your question...there is nothing you can do, except wait until the strike is over, and the mail starts moving again. I think the category your question is under is fine...or at least as good any any other I can think of.