eFax is an internet fax service founded in 1997 that allows users to send and receive faxes in digital format via email rather than using a traditional fax machine. It provides services like faxing documents as email attachments, searching faxes using keywords, enhanced security options, and viewing faxes before sending as well as features such as local and toll-free fax numbers, lifetime storage of all faxes, and support from their live agents 24/7.