1. A method comprising: sending an electronic mail from a computer to a receiving device in a remote site, the electronic mail comprising a first set of digital data displayable on a display and a second set of digital data not shown in the electronic mail, the first set of digital data including a first set of displayable data and a second set of displayable data, the second set of digital data including a first set of characters contiguous to the second set of displayable data, the second set of digital data comprising at least one link associated with at least a portion of the second set of displayable data and a second set of characters contiguous to the at least one link and designating a presence of the at least one link, the first and second sets of characters recognizable by a processor of the receiving device and not shown in the electronic mail; receiving at least a portion of the at least one link from the receiving device by a data storage device away from the remote site, the data storage device storing a third set of digital data; and retrieving, after the receiving at least a portion of the at least one link from the receiving device, at least a portion of the third set of digital data stored in the data storage device and delivering the at least a portion of the third set of digital data to the receiving device.