The present invention introduces unique functionality whereby there is a substantial reduction in the storage and replication requirements for the locally initiated electronic mail messages, which include locally sourced attachments. In the method of the present invention, at the origination location of an electronic message, there is an identification of electronic messages containing locally sourced attachment documents. During the storage of the transmitted message, there is determination of whether any attachment to the message was a locally sourced attachment. If the attachment was a locally sourced attachment, the attachment may not be stored with the message. Instead a pointer or link can be created to the original or locally sourced document. This approach will reduce the storage space required by electronic messages.