1. In a communication system that includes a first mobile device configured to transmit an electronic message, and a second mobile device configured to transmit another electronic message, and at least two disparate communication service providers, the first mobile device being further configured to communicate with a first of the two disparate communication service providers but not directly with a second of the two disparate communication service providers, the second mobile device being configured to communicate with the second communication service provider, a method comprising: receiving a first message initiated by the first mobile device and communicated over the first communication service provider, the first message identifying multimedia content that was captured with the first mobile device, the first message being addressed to an alias associated with a destination for the multimedia content; causing the multimedia content to be stored at the destination in association with the first mobile device; receiving a second message initiated by the second mobile device and communicated over the second communication service provider, the second message identifying other multimedia content that was captured with the second mobile device, the second message being addressed to the same alias as the first message; causing the other multimedia content to be stored in association with the second mobile device; and making the multimedia content and the other multimedia content available at the destination.