Free B2B Data Tools
Free tools for sales and marketing teams. No signup required for the first 25 uses per day. Just enter your data and get instant results backed by live DNS checks and real calculations.
Email Format Finder
Use this free email format finder to discover the most common email patterns at any company. Enter a domain to see formats like first.last@, flast@, firstl@, and 30+ other variations, ranked by likelihood.
Open toolData Quality Score Calculator
Score your CRM data quality based on key metrics. Input your bounce rate, duplicate rate, and data age to get an instant health grade.
Open calculatorCRM Cleanup ROI Calculator
Calculate how much bad CRM data is costing your business. See the ROI of cleaning and enriching your database.
Open calculatorEmail Syntax Validator
Check if an email address has valid syntax. Instantly detect formatting errors, invalid characters, and common typos.
Open validatorTAM Calculator
Estimate your Total Addressable Market by industry, geography, and company size. See how many decision makers Cleanlist can reach.
Open calculatorFree Email Verification Tool
Verify any email address in seconds. Check deliverability, detect disposable domains, and catch typos before you send.
Verify emailFree Domain Validator
Live MX, SPF, DMARC, and NS record lookups for any domain. Catch deliverability issues before you launch.
Validate domainFree Reverse Email Lookup
Find out who owns any email address. This free reverse email lookup checks deliverability, public Gravatar profiles, the company behind the domain, and the name pattern in the address. 25 free lookups per day, no signup.
Open toolB2B Contact Finder
Find business contacts by company domain. Get predicted email formats, company intelligence, and enrichment previews, free.
Open toolE.164 Phone Number Format Checker
Check any phone number's E.164 format in 2 seconds. Validates country code, line type (mobile vs landline), and regional numbering-plan format. No signup required, 25 free checks per day.
Open validatorICP Fit Score Calculator
Score any account against your Ideal Customer Profile in 60 seconds. Answer 8 questions about firmographics, technographics, and behavior, get a 0-100 fit score with reasoning.
Open calculatorFree Email Permutator
Generate every likely email address for a person in one click. Enter a name and company domain to get all 25+ standard email format permutations (first.last@, flast@, firstl@, and more), ready to copy.
Open toolFree Cold Email Spam Checker
Test your cold email before you send it. Paste your subject and body to get an instant deliverability score, flagged spam-trigger words, and specific fixes to stay out of the spam folder.
Open toolFree Email Blacklist Checker
Check whether your domain or sending IP is on a known email blacklist. Tests against 9 major DNS blocklists (Spamhaus, SpamCop, Barracuda, and more) in seconds, with plain-English results.
Open validatorFree MX Lookup Tool
Look up any domain's MX records instantly. See which mail servers handle a domain's email, detect the email provider (Google Workspace, Microsoft 365, and more), and check whether SPF is configured.
Open toolAI Cold Email Generator
Free AI cold email generator. Enter who you are reaching, your offer, a tone, and a goal, and get three ready-to-send cold email variants (each with a subject line) built on proven frameworks: AIDA, Problem-Agitate-Solve, and a short pattern interrupt.
Open toolEmail Signature Generator
Free email signature generator. Fill in your details, pick a clean template, choose an accent color, and copy a professional HTML signature that pastes straight into Gmail, Outlook, and Apple Mail.
Open toolLinkedIn Email Finder
Predict the work email behind any LinkedIn profile. Enter a name and company domain (or paste the LinkedIn URL) to get 15 ranked email patterns, then get the verified address with Cleanlist People Search.
Open toolFree Email Extractor
Paste any text, email thread, or HTML and pull out every email address instantly. The extractor finds and dedupes all addresses, then lets you copy the list or download it as a CSV. No signup.
Open toolSee the full platform in action
These free tools are the tip of Cleanlist. Watch a real ICP search go from query to enriched, validated, and CRM-ready in under five minutes.
36 ICP leads, 100% contact fill, validated and pushed to HubSpot in one flow
Need more than 25 checks per day?
Cleanlist's free tier includes 30 credits, bulk verification, full SMTP-level email checks, domain reputation, and access to the API. Pricing starts at $79/mo for production workloads.