In InDesign, you will want to package your files rather than sending us a *.indd. Here are the steps to do so. Open your file. Choose File -> Package A window like this comes up. You may have some warnings like this one indicating RGB color space being a problem. Clicking on "Package.." is acceptable in this case. Ignore this window and click "Continue" Choose a location to save your file. InDesign will generate a folder that you can package and send to us. Compressed formats that we can use are: ZIP, StuffIt, tar.gz, or tar.bz.