Re:Guest provides many possibilities of data exchange. So you can import and export important data and save time and nerves.Here you can find the official documentation for widget and API integration.
Re:Guest Messenger Widget
Instructions for client-side integration (JavaScript) of the Messenger widget into a new or existing public hotel website.
Re:Guest Request Widget
Instructions for client-side integration (JavaScript) of the request widget, which displays a request form for website visitors, validates user input and sends the entered data to Re:Guest.
Re:Guest Requests API
This API provides an endpoint to transfer requests from an external system (e.g. web server) to Re:Guest (server-to-server).