Commonly referred to as “e-mail”, an electronic mail message is a document created or received via an electronic mail system, including brief notes, formal or substantive narrative documents, and any attachments, such as word processing and other electronic documents, which may be transmitted with the message. [1]

[1] Kroll Ontrack, Glossary of Terms, http://www.krollontrack.com/glossaryterms

Attributions
- EDRM (http://edrm.net)