To use the Box integration with Image Relay, within BOX login to your BOX account and click the dropdown menu in the top right corner to select Apps. Or go to BOX Applications now.
Search for Image Relay
Click on the + Add button under the Image Relay logo to the left.
The Image Relay BOX App supports sending files and folders from BOX to Image Relay.
You can push your files or folders from BOX to Image Relay by right clicking on them, and choosing More Actions > Send File / Folder to Image Relay.