Image Relay can be integrated with 37 Signal's Basecamp. This integration allows you to quickly link your files between Image Relay and your Basecamp projects. Upload directly to Basecamp projects from Image Relay or import files from Basecamp into your Image Relay archive.
Your first attempt to share to Basecamp will prompt an access screen to pop up, similar to the one below. This will allow your Image Relay account to see your Basecamp assets as well as share to Basecamp projects.
You will then be prompted to enter your Basecamp username and password.