The invention provides a computer-based method of transmitting a file, including receiving a message from a user mobile device at a service computer system, determining at the server computer system whether the message includes a search identifier, extracting at least one search result from a data store at the server computer system based on a search term in the message if the server computer system determined that the message included a search identifier, and transmitting a file corresponding to the search result from the server computer system to the user mobile device.