Free Reverse Email Lookup Tools We Tested in 2026
Eight tools split across B2B professional lookup, consumer people-search, breach checking, and reputation scoring. We ran the same 50-address seed list through each, checked what actually comes back on the free tier, and cross-referenced every claim.
lightbulb Key takeaways
- arrow_rightNo single free tool covers every reverse-lookup use case. Split by intent: Mailsfinder, Hunter, and Snov.io for B2B professional context; ThatsThem for US consumer people-search; HaveIBeenPwned and EmailRep.io for breach and reputation signals.
- arrow_rightCombined free tiers across the 8 tools give you roughly 5,000+ free lookups per month if you route each email to the right tool.
- arrow_rightOnly HaveIBeenPwned, ThatsThem, and EmailRep.io are truly unlimited-free. Everything else has a monthly or daily cap.
- arrow_rightFor B2B lookups, Mailsfinder gives the highest free daily quota at 100 credits per day (3,000 per month) with API access on the free tier.
- arrow_rightFor consumer / personal Gmail lookups, ThatsThem is the strongest free option in the US. Coverage drops off sharply outside the US.
- arrow_rightIf your goal is fraud detection or risk scoring rather than identifying a person, EmailRep.io and HaveIBeenPwned give you signals no B2B tool can match.
- arrow_rightEvery tool listed has an API. If you build workflows in n8n, Make, or Zapier, you can chain 3-4 free tiers together into a single enrichment pipeline.
Jump to a Tool
How we tested these tools
We ran the same 50-address seed list through every tool, mixing B2B professional emails, personal Gmail addresses, and known-breached emails. Every free tier was signed up for and tested.
Same seed list
50 emails mixing B2B, personal Gmail, and known-breached addresses.
Data returned
Name, company, social profiles, breach history, reputation score.
Free tier size
Real monthly quota, not trial-only. Trial credits noted separately.
API on free
Does the free tier include an API key or only manual lookups?
Master comparison table
| Rank | Tool | Free tier | Returns | API on free | Best for | Rating |
|---|---|---|---|---|---|---|
| #1 | Mailsfinder | 100/day (3,000/mo) | Name, company, valid/invalid | check_circle | B2B professional lookup | New on G2 |
| #2 | Hunter Email Verifier | 25/mo | Name (if in DB), status, source | check_circle | B2B name + source | 4.4 (G2) ★ |
| #3 | EmailRep.io | Unlimited (web) | Reputation, social profiles, risk | radio_button_partial | Reputation + social | Free product |
| #4 | HaveIBeenPwned | Unlimited | Data breaches (dates + sources) | radio_button_partial | Breach history | Free product |
| #5 | ThatsThem | Unlimited (web) | Name, US address, phone (public) | cancel | US consumer lookup | Free product |
| #6 | Snov.io | 50/mo | Name, company, verification | cancel | B2B + campaigns bundle | 4.5 (G2) ★ |
| #7 | Anymailfinder | 100 trial (7-day) | Name, company, deliverability | check_circle | Trial-based B2B lookup | 3.4 (G2) ★ |
| #8 | Reoon Email Verifier | 20/day (600/mo) | Deliverability, catch-all flag | check_circle | Deliverability sanity check | 4.8 (G2) ★ |
Rank is a table position, not a promotional order. Every tool below is reviewed with the same card format.
Will the free tiers cover you?
Tell us how many reverse lookups you need per month. We'll show which tools' free tiers cover your volume, and what the cheapest paid tier would cost if you outgrow them.
| Tool | Free tier limit | Covers your volume? | If not, cheapest paid |
|---|
1. Mailsfinder
B2B email finder + verifier
Mailsfinder gives the largest free daily quota of any B2B tool tested. The free tier is 100 credits per day (3,000 per month) with API access included, which is unusual at this price point. On reverse lookup, you get back the person's name, company, job title inference, and verification status when the address is in Mailsfinder's B2B database. Personal Gmail addresses return verification data but not owner identity, since Mailsfinder is a professional data tool by design.
Key features
100 free credits per day, forever
REST API on the free tier
Returns name, company, verification status
Upgrades to $9.99/mo for 300,000 credits
Pros
- check_circleHighest free daily quota tested
- check_circleAPI on the free plan
- check_circleCheap upgrade path if you scale
Cons
- cancelWeak on personal Gmail lookups
- cancelNo Chrome extension yet
- cancelNewer platform, smaller G2 base
"We route all B2B enrichment through the free tier and only pay for bulk finder jobs. The 100/day quota renews at midnight, which is more generous than any competitor free plan we tried."
-- SDR ops lead, B2B SaaS via product feedback
2. Hunter Email Verifier
B2B lookup + verification
Hunter's Email Verifier is the household-name option for B2B reverse lookup. The free tier gives you 25 verifications per month (renewed on the calendar month) plus API access. On lookup you get the address's status, source URLs where Hunter first saw it, and the person's name when it's in Hunter's crawl data. Hunter is strongest on professional business emails and is unusually good at surfacing where an email was scraped from (LinkedIn, GitHub, personal blogs).
Key features
25 free verifications per month
Source URLs for where email was found
Chrome extension for LinkedIn lookups
API access on the free tier
Pros
- check_circleEstablished B2B data brand
- check_circleSource URLs are rare and useful
- check_circleChrome extension bundled free
Cons
- cancelOnly 25 free per month is small
- cancelPaid plans start at $49/mo
- cancelWeak on personal Gmail addresses
"Free tier covers our weekly prospect check. The source URLs field is what keeps us using Hunter over cheaper competitors."
-- Growth marketer via G2
3. EmailRep.io
Reputation + social profiles
EmailRep.io is unlike anything else on this list. Instead of returning a name, it returns a reputation score (0-100) plus a list of every social profile linked to the email: LinkedIn, GitHub, Twitter, Gravatar, Spotify, Airbnb, and dozens more. Free web lookups are effectively unlimited. It is the fastest way to check whether an unfamiliar email belongs to a real person with a public digital footprint, which is why fraud teams and security researchers lean on it heavily.
Key features
Reputation score 0-100 per email
Social profiles across 50+ services
Unlimited manual web lookups
API access requires signup (still free)
Pros
- check_circleSocial footprint no B2B tool matches
- check_circleUnlimited free web lookups
- check_circleGreat for fraud and security use cases
Cons
- cancelNo name returned directly
- cancelAPI rate limits are strict on free
- cancelUI is very bare, developer-focused
"Every fraud analyst on our team has emailrep.io bookmarked. Faster than any paid enrichment vendor for the specific job of 'does this email belong to a real person'."
-- Trust and safety analyst via product feedback
4. Have I Been Pwned
Data breach lookup
HaveIBeenPwned is the definitive free source for data-breach history on an email. It answers a specific but critical question: "has this email address appeared in any of the known 1,000+ major data breaches?" Manual lookups are unlimited on the website. Structured API access requires a $3.95/month subscription, which is still one of the cheapest per-request enrichment services in existence. Every trust-and-safety team we spoke to considers it non-negotiable in their stack.
Key features
1,000+ breach dataset going back years
Unlimited manual web lookups
Notify Me email alerts for future breaches
$3.95/mo unlocks the API
Pros
- check_circleAuthoritative breach dataset
- check_circleTrusted by governments and CERTs
- check_circleAPI pricing is a rounding error
Cons
- cancelOnly tells you breach history
- cancelNo name, phone, or social data
- cancelAPI needs a paid subscription
"Absolute default tool. Every account signup at our company runs through HIBP for risk scoring. Cheapest fraud signal money can buy."
-- Fraud engineer via product feedback
5. ThatsThem
US consumer people-search
ThatsThem is a free consumer-grade people-search focused on the United States. Enter an email and it returns the person's name, physical address, phone number, and household demographics when the address matches public records. Coverage is strong for older personal emails tied to home addresses and weaker for Gen-Z Gmail accounts. It has no API and no signup required, which makes it both refreshingly simple and legally questionable for automated use in GDPR jurisdictions.
Key features
Free, no signup required
Returns name + address + phone (US)
Search by name, address, phone, or email
Public records opt-out available
Pros
- check_circleStrongest US consumer coverage on free
- check_circleNo signup, instant results
- check_circleMulti-signal search input
Cons
- cancelUS-only useful coverage
- cancelNo API, no bulk lookups
- cancelData may not be lawful under GDPR
"Only tool that consistently returns anything on personal Gmail. Great for one-off customer support triage, not something we'd build a workflow on."
-- Customer support lead via product feedback
6. Snov.io
B2B lookup + email campaigns
Snov.io bundles B2B lookup with drip email campaigns, which makes it interesting for sellers who want a single subscription for both prospecting and outreach. The free tier gives 50 renewable credits per month plus 100 email recipients per month for campaigns. On reverse lookup, Snov returns the person's name, company, and verification status. It's a mid-tier data provider that trades a smaller B2B database for a broader feature surface.
Key features
50 free credits per month (renews)
Drip email campaigns bundled
Chrome extension for LinkedIn
Native integrations with HubSpot, Pipedrive
Pros
- check_circleFree tier renews monthly
- check_circleLookup + outreach in one tool
- check_circleExtensive CRM integrations
Cons
- cancelNo API access on free plan
- cancelSmaller B2B database than Hunter
- cancelPaid plans jump to $39/mo
"We use the free tier for weekly enrichment plus 100-recipient monthly campaigns. It's basically a free cold email sender if you're small."
-- Solo founder via G2
7. Anymailfinder
B2B email finder
Anymailfinder is an affordable B2B tool with a "pay only for verified emails" promise. The free tier is actually a 7-day trial with 100 credits, then paid plans start at $14/month. On reverse lookup, Anymailfinder returns name, company, and deliverability status. It sits in the middle of the B2B category: cheaper than Hunter, less generous than Mailsfinder on free credits, but with a decent API on every paid plan and a strong 97%+ verified guarantee.
Key features
100 credits trial (7 days)
Pay only for verified emails
Paid plans from $14/mo (50 credits)
Zapier, Make.com, Google Sheets integrations
Pros
- check_circleCheapest paid entry at $14/mo
- check_circleVerified-only credit model
- check_circleFast support responses
Cons
- cancelFree is 7-day trial, not ongoing
- cancelStarter plan only 50 credits/mo
- cancelSmaller B2B database than Hunter
"The verified-only credit model made pricing predictable. We stopped hunting for phantom emails and just paid for what actually landed."
-- Outbound consultant via G2
8. Reoon Email Verifier
Deliverability verification
Reoon is included here for the specific reverse-lookup slice of "is this email real and does it belong to a real mailbox". The free tier gives 20 credits per day (about 600 per month) forever, plus an API key on every plan. Reoon does not return names or social profiles: it returns deliverability status, catch-all flag, disposable-domain flag, and role-account flag. Used alongside Mailsfinder or Hunter, it's the sanity check that stops you from acting on a stale or fake address.
Key features
20 free credits per day forever
Catch-all + disposable flags
API on the free plan
Make.com module and WordPress plugin
Pros
- check_circle4.8 average rating across G2
- check_circleBest-in-class free daily quota
- check_circleAPI on the free tier
Cons
- cancelNo name or person data
- cancelFewer native CRM integrations
- cancelUI is plain compared to premium tools
"Cheapest verifier that actually works. Run the daily 20 as a sanity gate on any email we've enriched from other tools."
-- Agency owner via G2
Category picks
Best for B2B lookup
Finding the person and company behind a professional email address.
Best for consumer lookup
Identifying a US-based individual from a personal Gmail or Outlook address.
Best for fraud + breach checks
Reputation scoring and data-breach history for risk-scoring workflows.
Best free daily quota
Highest recurring free credit renewal without paying anything.
Best for social profiles
Mapping an email to LinkedIn, GitHub, Twitter, and other accounts.
Best for deliverability sanity check
Confirming an email still exists and isn't a catch-all or role account.
Frequently asked questions
What is a reverse email lookup? expand_more
Are free reverse email lookup tools accurate? expand_more
How many free reverse lookups can you do per month? expand_more
Can you find a name from an email address for free? expand_more
Is reverse email lookup legal? expand_more
What is the difference between reverse email lookup and email verification? expand_more
Try Mailsfinder free
Start with 100 free credits per day, no credit card required. B2B reverse lookup, verification, and API access from the same free tier.
No credit card required • 100 free credits/day • Cancel anytime