Three things to check before you buy another B2B list

Buying a B2B list feels like the fastest way to fill a pipeline. And sometimes it is. But a bad list is worse than no list — it wastes budget, burns your sender reputation, and demoralizes a sales team that keeps dialing disconnected numbers.

We see three problems repeat across almost every purchased list we audit. First: the data is older than advertised. A provider might say their records were verified within 90 days, but when we cross-check against live sources, contact job changes and company moves tell a different story. People switch roles. Companies restructure. A six-month-old list in tech might have 15-20% bad records.

Second: the segmentation is surface-level. You wanted VP-level marketing contacts at companies with 200-500 employees in the Northeast. What you got was anyone with 'marketing' anywhere in their title at companies that once had 200-500 employees. Titles are inflated, company sizes are outdated, and geography is approximate at best. Your 'targeted' list isn't.

Third: the sourcing is unclear. Where did these contacts come from? Were they scraped from LinkedIn? Pulled from a conference attendee list from three years ago? Bought from another broker who bought from another broker? If a provider can't tell you exactly how they sourced and verified each record, the list is probably a patchwork of recycled data.

Before you buy, ask for a sample — at least 100 records. Run them through a quick verification. Check current LinkedIn profiles against the titles and companies in the list. Check email deliverability on a test domain. If more than 10% of the sample fails, the full list will be worse.

A good list should come with a verifiable source, a recent verification date, and a match guarantee. Without those, you're gambling with your campaign budget and your domain reputation. The cheapest list usually costs the most.