People Data Labs doesn't sell directly to end users, it's a data-as-a-service company that other platforms (including some on this list) buy from. Opting out here helps cut off data at the source.
Use their Privacy Centre. You'll be asked your relationship to the company (just pick "Consumer"), enter your email, and verify via a link they send you. Once verified, confirm your country/state and submit. They aim to delete data within 14 days.
People Data Labs Privacy Centre →
Frequently asked questions
Will my data come back?
Possibly. Data brokers re-scrape public sources periodically, so your details may reappear after some time. It is worth checking back every few months and resubmitting a removal request if needed.
How long does this take to process?
People Data Labs aims to delete data within 14 days of a verified request.