$ 0 0 Fax using emailWhile the needs of computer-to-fax communications are well covered, the simplicity of quickly faxing a handwritten document combined with the advantages of email are not."iFax" (T.37) was designed for fax machines to directly communicate via email. Faxes are sent as email attachments in a TIFF-F format.iFax machine→ email message (over Internet) → computer email accountiFax machine→ email message (over Internet) → iFax machine (using email address)A new fax machine (supporting iFax/T.37) is required, as well as a known email address for the sending and receiving machines. This has limited the standard's use, though a system for looking up a fax's email address based on its phone number is under development.To work with existing fax machines, all iFax machines support standard faxing (requiring a regular phone line). Alternatively, an iFax can be used in conjunction with a fax gateway.iFax machine→ email message (over Internet) → Fax gateway → Phone line → traditional Fax machine (or vice versa)