https://www.stopcatalog.com/tags/data-brokers/Recent content in Data Brokers on Stopcatalog.comHugo -- gohugo.ioenStopcatalog.comTue, 02 Jun 2026 00:00:00 +0000https://www.stopcatalog.com/post/how-mailing-lists-get-sold/Tue, 02 Jun 2026 00:00:00 +0000https://www.stopcatalog.com/post/how-mailing-lists-get-sold/ <h2 id="one-order-many-databases">One Order, Many Databases</h2> <p>Picture a garden-supply catalog arriving in the mailbox. The customer fills out a paper order form — name, street address, city, state, ZIP — and mails it back with a check. That single transaction feels private, a two-party exchange between buyer and seller. Within weeks, the same name and address are circulating in files the buyer has never seen, held by companies the buyer has never heard of, being used to build a profile that will follow that household for years.</p>