If someone from honeydocs is reading this ... The tracking behavior depends on a tracking pixel which may not always be processed by the client. For example,

If someone from honeydocs is reading this ... The tracking behavior depends on a tracking pixel which may not always be processed by the client. For example, with the credit_cards sample, the xls file is actually an HTML file with an img at the end (url linking to https://honeydocs.herokuapp.com/img/xls/... https://honeydocs.herokuapp.com/img/xls/...) and a client that only reads the plaintext (there are a boatload of command line utilities that fit the bill) won't fetch the image.