A method for retrieving an MMS message, to be executed at an MMS User Agent, involves: generating an MMS subscription request; sending said MMS subscription request to an MMS server; receiving an MMS notification of an MMS message from the MMS server; in response to receiving said MMS notification, generating an MMS message retrieval request for retrieving said MMS message; sending said MMS message retrieval request to the MMS Server; receiving an MMS message retrieval comprising said MMS message; and in response to receiving said MMS message retrieval from the MMS Server, sending an acknowledgment to the MMS Server. herein the improvement is that: The MMS subscription request is sent using a SIP method SUBSCRIBE. The MMS notification is received using a SIP method NOTIFY. The MMS message retrieval request is sent using a SIP method FETCH. The acknowledgment is sent using a SIP method INFORM.