[jonathansampson]

The names and addresses are with the USPS. Brave (hello, I'm a team engineer) used the EDDM offering of the United States Postal Service. We were attracted to this method of advertising in part because it never exposes sensitive information to us at Brave. User data, instead, is with the USPS, which has legitimate claim over such information. As stated in our blog post, we sent only the artwork (for the mailer itself), and the Zip Codes we aimed to reach. That's it. We also asked that names NOT be printed, which was the case for earlier batches (e.g. https://twitter.com/TravelTechGuy/status/1513965348177219588). I hope this helps!