[toma_caliente]

Having worked in marketing, they absolutely worked with a data broker. You don't blindly send out mailers. You use data brokers to zone in on a target market. "This zip code is more like to buy X while this zip code is more like to buy Y."

[concinds]

All direct mail marketers do this, because it allows better targeting (& re-targeting old prospects & previous customers) but Brave explicitly said they didn't, and only went through the USPS's service.

[js212]

The USPS didn’t mess up. They are clearly using some sort of vendor to send out the mail.

[dimitrios1]

The USPS sells all the addresses themselves.