Abstract: A method and apparatus is provided for the automatic transfer of data across a communications network. The data is divided into batches prior to transfer and a record of the batches is maintained, so that in the event of a communications failure or a disconnection the transmission of data can be resumed from the point where it left off. By maintaining a record of the batches it is not necessary to re-transmit the entire file when the transfer is disrupted. There is also provided a system for transmitting large attachments (102) to emails (101) wherein the attachment (102) is sent to an intermediate server (108) and a token (109) is generated which is sent both to the intermediate server (108) and to the end receiver (107), which allows the attachment (102) to be downloaded from the intermediate server (108) to the end receiver (107) at a later time.

Abstract: The invention relates to secure delivery of data over communications networks, and in particular to the secure delivery of large datasets.