Note: .ifcZIP is compatible with e.g. Windows compressed folders, WinZip, etc. So if the recipient cannot read .ifcZIP, then a ZIP extractor application can open the file into .ifc or .ifcXML format.
IFC-based data exchange can be enhanced with BIM Collaboration Format (BCF)-based communication. In this workflow, you can assign comment topics to IFC model elements. Based on these, the other user can easily locate the referenced elements in the IFC model. BCF-based data exchange is particularly suited for marking changes or collisions (e.g. between architectural and structural elements). BCF-type communication can be done with the Mark-Up tool in ARCHICAD.