Send/receive faxes from PC (desktop) to fax machines / fax servers / online fax; Send/receive fax from iPhone/Android phone; Drag and drop on Mac computers; Fax to email as PDF; Auto save fax as PDF/TIFF files; Easy fax management; Send doc, pdf, excel, image and files the like out as fax; Fax from MS applications/PDF readers/scanners/CimFAX client; Sign/Stamp on phone/computer electronically;