Envoy was a portable document format released around the same time as the PDF format. It was included in the WordPerfect office suite. Two versions Envoy 1 and Envoy 7 were released. Files were created by printing to a special print driver and opened in a Envoy viewer.
Envoy files have the extension .EVY, compression was changed from LZW in version 1 to LZSS in version 7. Version 1 files can be opened in Envoy 7 viewer. Macintosh versions of Envoy were also created.
Version 1 .EVY files begin with the hex values "
32 5E 10 10"
Version 7 .EVY files begin with the hex values "
B2 97 E1 69"