Both the BC [http://www.ag.gov.bc.ca/courts/small_claims/info/guides/serving.htm Ministry of Justice] and the [http://www.bclaws.ca/civix/document/id/complete/statreg/261_93_00 small claims rules] explain how to serve documents and prove you served them. The small claims website has a [http://www.smallclaimsbc.ca/sites/default/files/pdf/serving-documents-checklist.pdf checklist for serving documents], and the Law Centre at the University of Victoria has a [http://thelawcentre.ca/self_help/small_claims_factsheets/fact_06 factsheet]. Also, script [[What is Small Claims Court? (Script 165)|165]] also has information on it.