To my knowledge, Cambodia does not have a mail delivery system. Mail can be sent to a PO Box or to the post office but not to street addresses. Locally, the Cambodians use long-distance taxis to hand-deliver mail - very often a portion of their monthly salary being sent home to the village to support parents and family members.
I was surprised last week to see a motor-bike pull up outside the Healing Home gate and a man hand something to one of the kids playing in our yard. The little guy came running up with an envelope - addressed to us and coming all the way from Canada.
Amazing! Now to send the reply - most likely to be hand-carried out by Christian and Becs when they leave on Monday - and posted from NZ.