Patent ID: 8849933

Claim:
A message delivery server for delivery of electronic mail messages to a receiving client terminal, said server comprising: a data storage for storing attachments of said electronic mail messages; a connection establishment unit that establishes a connection with said receiving client and obtains one or more connection definition settings when said connection establishment unit establishes connection with said receiving client, the connection definition setting being based on a stored connection definition; a connection unit for maintaining said connection with said receiving client; and a definition availability device for determining a file type of an attachment to be downloaded, to determine available modifications for said file type based on said connection definition; said connection unit sending an indication of said available modifications of the attachment to said receiving client, wherein said indication of available modifications includes a presentation of a plurality of URLs that represent said attachment processed via different methods; wherein said one or more connection definition settings include at least one definition relating to a connection bandwidth of said connection with said receiving client.