Free Email and B2B Data Tools
Free tools for sales and marketing teams. No signup, no card, nothing to install. Most of them run entirely in your browser; the ones that make a live DNS or SMTP lookup are free for 25 checks a day per IP.
- 20tools, from an MX lookup to a CRM cleanup ROI model
- 2 secondsa typical answer, checked live rather than looked up in a sample file
- No signupno account, no card, nothing to install
Start from what you already have.
Every tool here takes one thing you already hold and returns one answer. Find the row that matches what is in front of you: an address, a name, a domain, a list, a phone number, or a question about whether any of it is worth the effort.
You have an email address and want to know who is behind it
Free Reverse Email Lookup and Email Extractor.Start from the address itself and work back to the person, the company, and the public profile.
You have a name and a company but not the address
Email Format Finder, Email Permutator, LinkedIn Email Finder and B2B Contact Finder.Work out the pattern the company uses, build the likely addresses, then check them before you send.
You already have the addresses and need to know which ones will bounce
Free Email Verifier, Email Syntax Validator and Email List Cleaner.Syntax first because it is instant and free, then the live mailbox check, then the whole list at once.
You want to know whether the mail will actually land
MX Lookup Tool, Free Domain Validator, Free Email Blacklist Checker and Cold Email Spam Checker.Deliverability is a property of the sending domain and the message, not of the address you found.
You have the address and still have to write the email
AI Cold Email Generator and Email Signature Generator.Draft variants to react to, and a signature block that renders the same in Gmail and Outlook.
You have a phone number rather than an email
Phone Validator.Normalize it to E.164 and check it against its country's numbering plan before it reaches a dialer.
You need a number, for a plan or for a business case
TAM Calculator, ICP Fit Score Calculator, Data Quality Score Calculator and CRM Cleanup ROI Calculator.Size the market, score the fit, grade the data you already hold, and price what cleaning it is worth.
Every tool, free to run
Validators check that something is real, analyzers find or read what is already public, calculators put a number on it. Each one runs in the browser or against a live lookup and returns an answer in seconds.
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.
Data 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.
CRM Cleanup ROI Calculator
Calculate how much bad CRM data is costing your business. See the ROI of cleaning and enriching your database.
Email Syntax Validator
Check if an email address has valid syntax. Instantly detect formatting errors, invalid characters, and common typos.
TAM Calculator
Estimate your Total Addressable Market by industry, geography, and company size. See how many decision makers Cleanlist can reach.
Free Email Verifier
Check if an email address is valid in about two seconds. Cleanlist validates RFC 5322 syntax, looks up DNS and MX records, and flags disposable and role-based addresses. 25 free a day, no signup.
Free Domain Validator
Live MX, SPF, DMARC, and NS record lookups for any domain. Catch deliverability issues before you launch.
Free Reverse Email Lookup
To find out who owns an email address, paste it above and Cleanlist runs four public-source checks in one pass: whether the domain accepts mail, which company owns that domain, any public Gravatar profile tied to the address, and the name encoded in the address itself. This free reverse email lookup works best on business addresses, runs with no sign up, and allows 25 lookups per IP per day.
B2B Contact Finder
Find business contacts by company domain. Get predicted email formats, company intelligence, and enrichment previews, free.
Phone Validator
A phone validator checks whether a number could be real before anyone dials it. Paste any phone number and this free tool normalizes it to E.164, identifies the country and numbering plan, rejects it if the length or prefix is impossible, and flags toll-free and known VoIP ranges. It runs in your browser, with no signup and no daily limit.
ICP 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.
Email Permutator
An email permutator turns a person's name and their company domain into every likely address at once. Enter Jane Doe and acme.com and you get jane.doe@acme.com, jdoe@acme.com, jane@acme.com, doej@acme.com and roughly twenty more, ready to copy. It runs in your browser with no signup. Usually only one permutation is a live mailbox, so verify before you send.
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.
Free 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.
MX Lookup Tool
An MX lookup shows which mail servers receive email for a domain. Enter a domain or an email address and this free tool returns the MX records ranked by priority, names the provider behind them (Google Workspace, Microsoft 365, Zoho, Proofpoint and more), and checks whether an SPF record exists. 25 lookups per IP per day, no signup.
AI 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.
Email 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.
LinkedIn Email Finder
Paste a LinkedIn profile URL and this free tool reads the person's name from it, generates the work email formats their company most commonly uses, ranks them by confidence, and checks that the domain has live mail servers. LinkedIn does not publish member email addresses, so what comes back is a ranked set of candidates rather than one confirmed address.
Email Extractor
Enter a website URL and this free email extractor fetches the page, pulls every email address out of the HTML, removes duplicates, and hands you a list you can copy or download as a CSV. Paste raw text or HTML instead and the same scan runs entirely in your browser. No signup, no extension, no credit card.
Email List Cleaner
Paste a list of email addresses or drop in a CSV and this free email list cleaner removes duplicates, flags invalid syntax, separates role-based and free-consumer addresses, catches typo domains like gmial.com, and spots disposable inboxes. It runs entirely in your browser, so nothing you upload leaves your machine.
The tools are the edge of it.
One ICP search, from a sentence to enriched, validated and CRM-ready, in under five minutes. Same data, same waterfall, no 25-a-day ceiling.
36 ICP leads, 100% contact fill, validated and pushed to HubSpot in one flow
Free here means free.
No card on the tools, no card on the trial. This is every step of the ladder from a one-off lookup to a production workload, with the number attached to each one.
- 25 a dayPer IP, per tool, on the 6 tools that make a live DNS or SMTP lookup. The email extractor gets 100 site scans a day, and the other 13 run in your browser with no cap.
- 30 creditsEvery month on the $0 Free plan after the trial, for records added by hand. Search itself costs nothing on every plan.
- 14 daysOf Scale on every new org: 250 credits, 3 seats, no card, CSV upload for whole lists, and every feature except the public API and MCP.
- $79A month for Starter when the trial ends, 25% off annually. One shared wallet across the team.
Need more than 25 checks a day?
Bulk verification, the 25+ provider waterfall, and two-way CRM sync run on the same data these tools do. 98% verified work email and 85% direct dial on a 500-lead test.
250 credits, 3 seats, 14 days. No card required. Cleanlist enriches and syncs into HubSpot, Salesforce and Pipedrive. It does not send the email.