A system in which originating mail processors would upload pertinent mail piece information on addressees, pointers or other identifiers automatically and periodically to a data center. The recipient addressee of the mail piece would temporarily configure his digital postage meter or mail processor as a mail receiver so that the postage meter or mail processor would read the digital indicia that was affixed to the currently delivered incoming mail. The incoming mail would be date/time stamped, opened (optionally) and the unique identifier that was placed in the postal indicia would be read. The recipient meter or mail processor would periodically upload to the data center raw data on the unique identifiers or codes that have been received. If, the received unique identifiers or codes match with the sender unique identifiers or codes in a reasonable amount of time, as would normally be the case, the sent and received codes cancel out, or are kept for statistical information on delivery times, etc. Non-matched codes could be flagged and reported to the originator for further investigation. Thus, the data center may be able to locate mis-sent or mis-routed mail and automatically feed back information on undelivered or undeliverable mail.