The invention relates to a method and system of transferring internet electronic messages (e-mails). The method comprises the steps of creating a first e-mail by sender's mail user agent (11) and authorizing the sender by sender's mail server (2). To reduce network traffic and limit activities of entities responsible of transferring SPAM the method further comprises the steps of (a) sending an authorization request, in one embodiment in a form a of a second e-mail comprising IP address of sender's local computer system (1), to a sender authorization sever, which in one embodiment is recipient's local mail server (42); (b) authorizing said local computer system (4); (c) accepting the first e-mail by recipient's server, which in one embodiment is recipient's local mail server (42), if said authorization request of intention of sending the first e-mail to this recipient was authorized by the sender authorization server.