A method for sending media messages, characterized by comprising following steps of: a media server receiving a media message which is delivered by a sending client through an Internet Message Access Protocol, IMAP, to a storage unit for message to be sent pre-allocated to a sending user; the media server storing the received media message in the storage unit for message to be sent of the sending user; and the media server acquiring a media message unsent in the storage unit for message to be sent, and forwarding the media message according to an identifier of a recipient user carried in the acquired media message; wherein, the step of the media server forwarding the media message according to an identifier of a recipient user carried in the acquired media message comprises: with regard to a situation that the recipient user and the sending user belong to the same media server, the media server directly sending the media message to a mailbox of the recipient user within the media server; with regard to a situation that the recipient user and the sending user belong to different media servers, the media server sending the media message to another media server to which the recipient user belongs through an Simple Mail Transfer Protocol, SMTP; before the step of the media server receiving the media message, further comprising: the media server firstly performing authentication on the sending user; after the authentication, the media server establishing the storage unit for the sending user. a media server receiving a media message which is delivered by a sending client through an Internet Message Access Protocol, IMAP, to a storage unit for message to be sent pre-allocated to a sending user; the media server storing the received media message in the storage unit for message to be sent of the sending user; and the media server acquiring a media message unsent in the storage unit for message to be sent, and forwarding the media message according to an identifier of a recipient user carried in the acquired media message; wherein, the step of the media server forwarding the media message according to an identifier of a recipient user carried in the acquired media message comprises: with regard to a situation that the recipient user and the sending user belong to the same media server, the media server directly sending the media message to a mailbox of the recipient user within the media server; with regard to a situation that the recipient user and the sending user belong to different media servers, the media server sending the media message to another media server to which the recipient user belongs through an Simple Mail Transfer Protocol, SMTP; with regard to a situation that the recipient user and the sending user belong to the same media server, the media server directly sending the media message to a mailbox of the recipient user within the media server; with regard to a situation that the recipient user and the sending user belong to different media servers, the media server sending the media message to another media server to which the recipient user belongs through an Simple Mail Transfer Protocol, SMTP; before the step of the media server receiving the media message, further comprising: the media server firstly performing authentication on the sending user; after the authentication, the media server establishing the storage unit for the sending user. the media server firstly performing authentication on the sending user; after the authentication, the media server establishing the storage unit for the sending user.