How to judge a B2B lead list before you buy
Seven checks to run on any B2B lead list before you pay for it: sources, dates, statuses, fit, bounce terms and what the seller won’t promise.
Most lead lists look fine in a spreadsheet preview. Problems show up after you send: bounces, wrong titles, companies that closed. These checks help you spot weak lists before you pay, whoever you buy from.
1. Ask for a sample you can actually check
A real sample has enough rows (20 or more) to spot patterns, and enough detail to check a few rows yourself. Pick three rows at random and look the people up on the company website and LinkedIn. Are they still there, in that role?
2. Look for a status on every row
Good lists say what was confirmed and what wasn’t. A column such as “verified / partial / unknown” is more honest than a list where every field is filled in. Fully filled lists are often filled with guesses.
3. Check the dates
Business contact data decays as people change jobs. Ask when each email was checked. A list without dates may be old.
4. Ask where the data comes from
“Proprietary sources” is not an answer. Expect named source types: company websites, public registries, licensed B2B databases, LinkedIn.
5. Test fit, not just accuracy
A list can be accurate and still wrong for you. Compare a sample against your ideal customer: industry, size, location, title. Count how many rows you would actually email.
6. Read the bounce and refund terms
Look for specific, written terms: what counts as a bad lead, how long you have to report it, and what you get back.
7. Be wary of guarantees about results
No seller controls your offer, copy or market. Promises of a set number of meetings are a warning sign, not a feature.
Guideily’s own public sample is available to check against this list.
Published by Guideily LLC · November 3, 2026. General information, not legal or financial advice.