1. A method comprising: obtaining a copy of an electronic communication, wherein the electronic communication comprises a reference to a document, and contents of the document are not included in the copy of the electronic communication as an attachment; obtaining a copy of the document, in response to the reference, wherein the document exists at a location identified by the reference; archiving the copy of the electronic communication and the copy of the document in archive media; storing relationship information to identify a relationship between the electronic communication and the document; and adding information associated with the document to a set of archival metadata to indicate that the copy of the document has been archived, wherein the information associated with the document comprises location information which identifies the location of the copy of the electronic communication and the copy of the document in the archive media.
1. A method comprising: obtaining a copy of an electronic communication, wherein the electronic communication comprises a reference to a document, and contents of the document are not included in the copy of the electronic communication as an attachment; obtaining a copy of the document, in response to the reference, wherein the document exists at a location identified by the reference; archiving the copy of the electronic communication and the copy of the document in archive media; storing relationship information to identify a relationship between the electronic communication and the document; and adding information associated with the document to a set of archival metadata to indicate that the copy of the document has been archived, wherein the information associated with the document comprises location information which identifies the location of the copy of the electronic communication and the copy of the document in the archive media. 7. The method of claim 1 , further comprising: after the archiving, detecting that the document has been modified to create a modified document; obtaining a copy of the modified document; archiving the copy of the modified document in the archive media; updating the relationship information to identify a relationship between the electronic communication, the document, and the modified document; and adding information associated with the modified document to the archival metadata to indicate that the copy of the modified document has been archived.