1. A system for controlling at least a first ( 3 a ) and a second remote mailbox ( 3 b ) located in at least one e-mail server ( 2 a, 2 b ), in a terminal ( 1 ), characterized in that between the terminal ( 1 ) and said e-mail server ( 2 a, 2 b ) maintaining said first remote mailbox ( 3 a ), and between the terminal ( 1 ) and said e-mail server ( 2 a, 2 b ) maintaining said second remote mailbox ( 3 b ), at least partly simultaneous connection (PDP 1, PDP 2 ) is arranged to be set up, wherein said remote mailboxes ( 3 a, 3 b ) are arranged to be controlled by means of the terminal ( 1 ) substantially simultaneously by means of said connections (PDP 1, PDP 2 ).