10. A computer-based system for transmitting an electronic document, comprising: an intermediate computer that is remote from a mobile electronic device sending an email message, the intermediate computer including a memory storing instructions; and a processor configured to: execute the instructions to receive the email message having a delivery address from the mobile electronic device, execute the instructions to determine that the email message has an attached document, execute the instructions to determine that the attached document is to be cleansed of metadata according to a cleansing policy, execute the instructions to automatically remove metadata from the attached document, execute the instructions to create a cleansed version of the attached document at the intermediate computer, execute the instructions to replace in the email message the attached document with the cleansed version of the attached document, and execute the instructions to send the email message with the cleansed version of the attached document from the intermediate computer to the delivery address.
10. A computer-based system for transmitting an electronic document, comprising: an intermediate computer that is remote from a mobile electronic device sending an email message, the intermediate computer including a memory storing instructions; and a processor configured to: execute the instructions to receive the email message having a delivery address from the mobile electronic device, execute the instructions to determine that the email message has an attached document, execute the instructions to determine that the attached document is to be cleansed of metadata according to a cleansing policy, execute the instructions to automatically remove metadata from the attached document, execute the instructions to create a cleansed version of the attached document at the intermediate computer, execute the instructions to replace in the email message the attached document with the cleansed version of the attached document, and execute the instructions to send the email message with the cleansed version of the attached document from the intermediate computer to the delivery address. 15. The system of claim 10 , wherein the cleansing policy specifies the attached document is to be cleansed if the attached document contains a pre-specified type of metadata.