Not a database somebody else already emailed twice. A list built this week, to your criteria, from sources you can point at.
Most lead lists sold online are the same aggregated database resold to everyone in your industry, months stale, with bounce rates that quietly wreck your sending domain. The alternative is to build the list at the moment you need it, from the sources where the businesses actually are, filtered to the criteria that matter to you rather than to the criteria a vendor happened to store.
That means you get to be specific in ways a stock list never allows. Every HVAC contractor in three named metros with a Google rating above 4.0, at least 25 reviews, a website that has no booking form, and a listed mobile number — that is a build, not a filter on somebody's database.
Public business listings, professional directories, association member lists, marketplace seller pages and company websites. The right source depends entirely on who you are selling to, which is the first thing worth talking through before anything is built.
Business name, category, full address, geo coordinates, phone, website, email, contact name and role where published, rating and review count, opening hours, social profiles, employee-count band, and technology signals scraped from the site — whether they run Shopify, whether they have live chat, whether their booking is online or by phone.
That last category is what turns a list into a campaign. Knowing that 340 of your 900 targets have no online booking gives you the first line of the email, and it is the difference between outreach that gets replies and outreach that gets deleted.
Every email goes through syntax, domain, MX and mailbox checks before delivery, and anything that fails is either dropped or flagged rather than quietly padding the row count. Phone numbers are format-validated and line-type checked. Duplicates are collapsed across sources so the same business does not arrive three times under three spellings.
You are told the numbers honestly: how many were found, how many survived verification, how many were dropped and why. A smaller verified list beats a big dirty one every time, because deliverability damage from a bad send outlasts the campaign.
This is B2B data from public sources: business contact details, published listings, professional profiles. I do not scrape personal data from behind logins, do not touch consumer PII, and do not build lists designed to circumvent someone's opt-out.
CAN-SPAM, GDPR and CCPA all bear on what you can do with a list once you have it, and the rules differ by where your targets are. If your list includes EU or UK businesses, that changes what a lawful send looks like — I will flag it, though what your lawyer says about your sending practice is a separate question from what the data is.
Google Maps, Yelp, LinkedIn, Yellow Pages, Industry directories, Amazon sellers, Shopify stores, Trade registries
Python, Playwright, Google Places, Email verification APIs, Pandas, Google Sheets API, CRM webhooks
Five thousand verified business leads in about 24 to 48 hours is a normal run. Larger builds are a question of scale rather than difficulty. The limit is usually how many businesses actually match your criteria — if a niche only contains 800 real targets, you get 800 real targets rather than 5,000 padded ones.
Most one-off lists land between $200 and $700 depending on the number of sources, the depth of fields and whether verification is included. Recurring monthly builds are quoted as a lower per-run fee. You get a fixed price up front.
Every address is syntax, domain, MX and mailbox verified before it reaches you, which typically puts deliverability in the 90 to 95 percent range. Anything that cannot be verified is flagged rather than silently included, so you always know what you are sending to.
Where a named contact and role are published — on the company site, in a directory, on a professional profile — yes. What I will not do is guess-and-test private addresses or pull personal data from behind a login. Business contact details from public sources is the line.
Yes. HubSpot, Pipedrive, Salesforce, Close, Airtable and Notion are all straightforward, either as a scheduled push or as a webhook that fires as each verified lead is found.