Can I have a processed Chinese Visa mailed back to me in Edmonton?

I will be coming to Calgary in person to apply for the Chinese Visa, but can it be mailed back to me if I live in Edmonton? Do I simply provide a self-addressed stamped envelope? How much postage is required? Can I arrange to have it sent back to me by registered mail? Should I allow an extra day or two in addition to the regular processing time if you can mail it back to me?