Method of electronically consolidating mail items

A logistics system for carrying and monitoring mail items between a plurality of senders and a postal administration that handles delivery of the mail items to their destinations, said method comprising the following organized around a network:

• a plurality of computers, each of which is associated with a determined sender for creating, in a database, a mail item consignment file that, for each mail item to be sent, contains firstly a unique identity code that identifies both the sender and the mail item, and secondly the destination address;
• a remote central server of a third party entity for receiving said mail item consignment files from said plurality of computers and via said network, for consolidating the received files into a single consolidation file, for sending a collection order to a collection service for having the mail items collected from each of the senders, for using print means to print at least one bar code on each of the mail items once delivery has been taken of said mail items, for sending said unique consolidation file to a server of the postal administration and for sending a hand-over order for handing over the mail items to a collection office of the postal administration, and for receiving, via the network, said unique identity code borne by each mail item from the mail item collection service;
• and
• a portable input and transmission means that transmits said unique identity code borne by each mail item to said remote central server via a wireless telecommunications network;
• wherein the central server compares said unique identity codes received at said central server with the unique identity codes that are present in said consolidation file, and informs a sender of the plurality of senders of any omitted mail item or error in the consolidation file based a comparison of the unique identity codes before a collection employee delivers the mail items to said third party entity.