USPS dimensions for a letter say :Max. length 11-1/2", height 6-1/8" or thickness 1/4"
Would cost $1.49. Wouldn't a standard bubble mailer be under 1/4"? A lot of the shipping threads on here are about how to exceed 1/4" for Delivery confirmation. Since Canada doesn't have Delivery couldn't everyone mail at the Letter price not the Package price?