MARKING VOICE MESSAGES AS HEARD

In response to receiving a voice message, a telephony service creates an e-mail message directed to the intended recipient of the voice message. The e-mail message includes the voice message as an attachment and an embedded image file. Once the e-mail message has been created, a mail system is utilized to transmit the e-mail message to the intended recipient of the voice message. An e-mail client application program may be used to retrieve the e-mail message and to view the message content. In order to render the message content, the e-mail client application program will transmit a request for the image file. In response to receiving the request for the image file, an indication is transmitted to the telephony service indicating that the intended recipient has heard the voice message. In response to receiving the indication, the telephony service marks the voice message as heard.