What is eFax?
eFax is an internet fax service operated by j2 Global (now Ziff Davis) that enables sending and receiving faxes via email without a physical fax machine. Its desktop client handles proprietary .efx and .efax fax document formats.
Files eFax opens
Data Files
Click any badge for full per-format details - what it is, how to open it and how to convert it.
Download eFax
SOURCEwww.j2global.comofficial site - avoid third-party download portals
PLATFORMSWindows
