An email client capable of supporting real-time communication of time-based media. The email client includes a session element configured to establish a session with a server when an email address addressing a recipient within a domain is defined. As soon as the email address is defined, a transmitting element of the email client is configured to progressively and simultaneously transmit time-based media as the time-based media is being created to the recipient via a route at least partially discovered by a lookup of the domain of the email address. By at least partially discovering the route to the recipient as soon as the email address of the recipient is defined, the transmitting element may progressively deliver the time-based media to the recipient.