45. The storage medium of claim 40 , wherein the operation of automatically creating a cleansed version of the attached document further includes removing only pre-specified types of metadata in accordance with a cleansing policy.
40. A non-transitory computer-readable storage medium storing instructions for transmitting an electronic document, the instructions causing one or more computer processors to perform operations comprising: receiving, at an intermediate computer that is remote from an electronic device, an email message from the electronic device, the email message having a delivery address; determining that the email message has an attached document including metadata; automatically creating a cleansed version of the attached document by removing at least a portion of the metadata from the attached document; replacing in the email message the attached document with the cleansed version of the attached document; and sending the email message with the cleansed version of the attached document from the intermediate computer to the delivery address.