In computing, Envoy was a proprietary portable document file format marketed by WordPerfect Corporation, created as a competitor for Acrobat Pro.
It was introduced by Tumbleweed Communications Corporation in 1993 and shipped with WordPerfect Office in March 1994.
An Envoy file could be created by the use of a special printer driver in WordPerfect, and an application for "viewing, manipulating, annotating or printing Envoy files" was included in the WordPerfect Envoy product, together with a "runtime file" that permitted a viewer to be embedded in Envoy files and enable recipients to have "all the functionality of the full viewer without paying licensing charges".
Unlike Adobe PDF, the file format was not publicly documented.
[citation needed] Envoy failed to make any headway against PDF, and is now largely unused.