This document provides an overview of eFax, an internet fax service that allows users to send and receive faxes digitally rather than using a traditional fax machine. It was founded in 1997 and offers features like faxing by email, searchable faxes, enhanced security, fax preview, 24/7 support, local and toll-free fax numbers, lifetime storage of faxes, and packages that include multiple email addresses and automatic saving of sent faxes.