Welcome to Inland Presort & Mailing Services (IPMS). Inland Presort & Mailing Services (IPMS) has been serving the Inland Empire area since 1996. It provides bar-coding and presorting services to local government agencies and businesses for postage discount. It has been providing and is committed to provide presort & mailing services with integrity, security, and expeditious delivery. It meets “Same Day Processing & Delivery to USPS” standard requirements by its customers.