I quite agree that it takes trust. We do have a demo up for a safe hands-on with the product (demo.fluent.io). We certainly take your privacy seriously. Here's a bit more on that: http://fluent.io/privacy.html
"We are well versed in industry-leading privacy practices."
- What is your country of jurisdiction (i.e. what government can access my email)? Google is based in the US and you are in Australia.