Founded in 2002 as Regina's exclusive mini-billboard company, Postcard Portables has been expanding month after month due to the effectiveness of our mini-billboards and the popularity of our modern looking structures. In 2005 our first franchise was set up in Edmonton, Alberta. We now have franchise points servicing most major markets in western Canada. The Postcard Portables brand has been expanding in Canada due to the effectiveness and popularity of its mini-billboard outdoor advertising structures. Headquartered in Regina, SK, there are now franchise points servicing many major markets in Western Ca.. Postcard Portables | The Original Mini-Billboard Company. Postcard Portables Canada helps companies reach their customers by utilizing modern and attractive looking outdoor mini-billboards. We have various sign franchise locations servicing territories across Canada.