We have added a new feature for zipping and unzipping files with an action event. You can use this in your workflows. In the event, you can choose whether you would like to zip or unzip. Choose the source property that must be zipped/ unzipped and assign the created variable (as) in an update event to the right. We've made a short video in which we explain how to zip a multi-file property into a single file property.
The new zip and unzip action event