IPC's UNEX system monitors quality of service for airmail letters from time of posting to when they are delivered. UNEX introduces more than one million test letters to the international pipeline each year. These are processed as normal mail they form a statistically valid sample of real mail travelling between IPC's 21 members. Our independent contractor records posting and delivery times.
Postal operators use DACS to produce custom-built management reports.
These help them maintain and improve their delivery reliability for international mail.