by bwinton (Developer) on Aug. 3, 2011 · permalink

The first part is correct. As I mention in the license, this add-on will send the provider you choose and the way you invoked the search function to a Mozilla Messaging server. We won't send the search terms, nor the page you get back. We do this so that we can tell how people are using the add-on, and which search providers people like.

This is different from Thunderbird's search because it lets you easily search the web for terms mentioned in your email, or typed into the search bar at the top.

Thank you for your comments,
Blake.