Method for processing at least two IMAP data flows exchanged via an internet network between an electronic mail server and two remote clients respectively using a first and a second separate proprietary IMAP protocol, each IMAP data flow respectively corresponding to a respective remote client connection to an electronic mailbox, said method comprising the extraction of proprietary protocol data from an IMAP data flow, the execution of at least one task relating to the proprietary protocol data by a proprietary IMAP application module, and the generation of a return IMAP data flow, the proprietary IMAP application module being selected from two modules suitable for executing tasks relating respectively to the first and second proprietary IMAP protocols.
