We're doing a project where were talking to non-.NET web services and this means that sometimes we have to see what the exact message looks like. In case you ever need to do this: a MessageInspector will not (always) be suitable for this. This is particularly the case where you're using a certificate to sign the message. Signing happens after the MessageInspector is invoked, so it will just show you the unsigned message. One thing you can do is setup a URL you can post to that logs the incoming message as is. We have a "service" like that available to all developers, because it is a quick and easy solution that doesn't require installing additional tooling or modify code. Another option is to configure message logging (see the MSDN article Recommended Settings for Tracing and Message Logging).