Automatic off-line availability for document content linked in electronic mail messages

A system for providing automatic off-line availability of shared document content linked in electronic mail ("email") messages. Documents indicated by links in processed email messages may accessed when a client system user is working either online or offline. A software component operates to read through email messages sent to a client system user, and to locate messages including links to content stored on the server system. The software component accesses the content indicated by the links contained in the email messages, and moves the content onto the client system for offline access. The software component may include a periodically scheduled agent, and/or a component that is called just prior to the client system or email application going offline.