1. A method for transmitting a multimedia message from a first terminal to a second terminal, wherein notification of an acknowledgement of receipt, from the second terminal to the first terminal, is provided by the second terminal for said multimedia message, wherein: the first terminal measures a period of waiting for the notification of acknowledgment of receipt, if said waiting period exceeds a predetermined threshold, the first terminal generates a text message to be sent to the second terminal, the first terminal assigns an identifier to each multimedia message, the first terminal, in the absence of acknowledgment of receipt of a multimedia message after the waiting period, assigns to a generated text message a signature of the identifier of said multimedia message, upon receiving a text message, the second terminal compares the signature of the text message to at least one identifier contained in a multimedia message received by the second terminal, and if they match, the second terminal removes said text message received.