B2B Contact Finder
Find business contacts by company domain. Get predicted email formats, company intelligence, and enrichment previews, free.
B2B Contact FinderFind business contacts by domain
A contact finder locates business contacts at a target company from its domain. Enter any company domain and this free tool returns the email formats that organization most likely uses, plus a preview of available company data, no signup required. Format prediction is a starting point, not proof an address exists. For verified emails at 98% accuracy, a free Cleanlist account includes 30 credits.
Find verified emails at scale
This predicts the pattern. Cleanlist finds and verifies real, deliverable emails through a multi-provider waterfall, at 1 credit per verified email. Start the 14-day trial, no card.
- 25+providers in one waterfall lookup, priced as one result
- 98%verified work email on a 500-lead stratified test
- 85%direct dial on that same 500-lead test
- 0credits to search. Free and unlimited on every plan
You found contacts at one company. Upload a CSV of domains and get verified contacts at every one. 250 credits, 3 seats, 14 days. No card required.
How Does This Tool Work?
The B2B Contact Finder helps sales and marketing professionals identify potential business contacts at target companies. Enter a company domain to instantly see the most common email format patterns used at that organization, along with a preview of the company intelligence data available through Cleanlist's enrichment platform.
Unlike basic email guessers, the Contact Finder combines domain analysis with pattern recognition across thousands of B2B companies to predict the most likely email formats. It also previews the firmographic and organizational data that Cleanlist can enrich, including company size, industry, headcount band, verified work emails, and direct phone numbers.
This free tool gives you a starting point. For verified, deliverable email addresses and phone numbers confirmed through real-time SMTP checks and multi-provider waterfall enrichment, sign up for Cleanlist's free tier (30 credits, no credit card required). Every contact returned by Cleanlist is verified against real mailboxes, not just predicted from patterns.
What Can the Full Platform Do in 5 Minutes?
This free tool is the tip of Cleanlist. Watch a real ICP search go from query to enriched, validated, CRM-ready list in under five minutes. 36 leads, 100% contact fill, synced to HubSpot.
36 ICP leads, 100% contact fill, validated and pushed to HubSpot in one flow
Get contact data where you already prospect
The Cleanlist Chrome extension pulls verified emails and direct-dial phone numbers off LinkedIn profiles and search results without leaving the tab. Every new workspace starts on Scale for 14 days (250 credits, 3 seats, no card), and the extension stays available afterwards on the $0 Free plan at 30 credits a month.
Which Cleanlist Plan Do You Need?
Annual billing takes 25% off every paid plan. Search is free and unlimited on all four: a verified work email is 1 credit however many providers it took, a direct dial 10, both together 11, validation 0.5, AI qualification 5. A miss costs nothing, and the credits sit in one shared team wallet.
Frequently Asked Questions
How does the B2B contact finder work?
The contact finder analyzes a company's domain to predict the most common email format patterns (like firstname@company.com or firstname.lastname@company.com). It uses pattern recognition across thousands of B2B organizations to estimate which formats are most likely. For verified, deliverable email addresses, use Cleanlist's full enrichment platform.
Is this contact finder really free?
Yes, the contact pattern finder is completely free with no signup required. It shows predicted email formats and company intelligence previews. For verified email addresses and phone numbers (confirmed via SMTP checks), you can sign up for Cleanlist's free tier which includes 30 credits.
How accurate are the predicted email formats?
Email format predictions are based on common B2B patterns and are typically accurate for 60-80% of companies. However, predictions alone cannot confirm whether a specific email address exists or is deliverable. Cleanlist's full verification checks each address against real mail servers for 98% accuracy.
What is the difference between this tool and Cleanlist's full platform?
This free tool predicts email patterns based on domain analysis. Cleanlist's platform goes much further: it verifies each email address via SMTP handshake, finds direct-dial phone numbers, enriches contacts with 40+ data points (job title, company size, tech stack, funding), and runs waterfall enrichment across 25+ data providers for maximum coverage.
Can I find phone numbers with the contact finder?
The free contact finder shows email format predictions only. For verified direct-dial phone numbers and mobile numbers, sign up for Cleanlist's free tier. Cleanlist's waterfall enrichment achieves 85% phone coverage across B2B contacts, significantly higher than single-source providers.
How is a single-source email finder different from a waterfall?
A single-source finder queries one dataset and returns whatever that dataset holds, so a miss is final. Cleanlist runs waterfall enrichment instead: each contact goes through 25+ providers in sequence until one returns a result, and the result is verified before delivery. Cleanlist states 98% verified email and 85% direct dial as product specs. This free tool shows format predictions only; the full platform delivers verified, multi-source results. Several well-known email finders are sources inside that cascade rather than alternatives to it.
Which Free Email Lookup Tools Work Together?
Free, purpose-built tools that work together. Start from a name, a domain, an email, or a block of text, and move to a verified contact.
- Reverse Email LookupStart with an email address and find the name, company, and public profile behind it.
- Email Format FinderSee the email pattern a company uses (first.last@, flast@) from just its domain.
- Email PermutatorGenerate every likely address for a person from their name and company domain.
- LinkedIn Email FinderGet the likely work email behind a LinkedIn profile, ranked and MX-checked.
- Email VerifierCheck whether any address is deliverable before you send, with syntax, DNS, and MX checks.
- Email ExtractorEnter a website URL or paste text and pull out every email address on it, deduped.
- AI Cold Email GeneratorDraft the cold email to send once you have the contact.
- Best B2B People Search Tools 2026Compare the top people search platforms for building contact lists at scale.
Which Tool Should You Buy for This at Scale?
Independent comparisons of the platforms that do this job on a whole database, including where Cleanlist fits and where it does not.
- Best B2B contact database softwareWhich contact databases hold up on accuracy, refresh rate and price once you work them at volume.
- Best sales prospecting toolsThe prospecting stack ranked by how fast it gets a rep from an ICP definition to a contactable list.
- Best data enrichment toolsSide-by-side comparison of the enrichment platforms, with coverage, credit costs and what each one actually verifies.
Gain full access for 14 days.
250 credits, 3 seats, no card needed. Access to every feature except public API & MCP.
Cleanlist finds, verifies and enriches contact data, and syncs it two ways with HubSpot, Salesforce and Pipedrive, or one way out to Outreach, Salesloft and Lemlist. Cleanlist does not send email.