Verify a sender
An offer, an invoice, a recruiter mail. Find out whether the address belongs to the person it claims to belong to.
free email lookup · no signup
Who is behind this email address?
Paste any email. We pull the person, the domain, the deliverability and the reputation from 14 public sources. Results in under a second.
try a sample:
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
112M+
addresses indexed
14
public sources
87
blocklists checked
since 2014
12 years online
what you get
A real email lookup looks like this.
Every result is one page: person, domain, deliverability, reputation. No signup wall, no "view full report" trick.
// person
Acme Inc. · Operations
support · public profile
linked profiles3 found
first seenApr 2019
aliases2 known
// deliverability
syntaxvalid
mxresolved
disposableno
smtp250 ok
// reputation
84
sender score
spfpass
dkimpass
blacklist0 / 87
verdict: deliverable · resp 312 ms
Open a real result
use cases
People run an email lookup to…
Spot a fake or scam
Disposable mailbox, freshly-registered domain, mismatched MX. The signals fraud rings leave behind, in plain English.
Find a person again
An old contact, a marketplace seller, a dating profile. One address, the public trace it left online.
Clean a contact list
Paste up to 100 addresses, see invalid, catch-all and risky ones flagged in a single pass. CSV export.
recent_lookups.log
What other visitors looked up in the last hour.
why it matters
Every address leaves a trace. We read it.
Protect your reputation
Bad addresses hurt your domain before they hurt your campaign. Catch them before they reach your ESP.
Clean lists without the spreadsheet
CSV in, verdict out. Invalid, catch-all, role-based and disposable flagged on a single pass.
KPIs follow clean data
Deliverability, open rate and reply rate rise when the list underneath is real.
how we check
Ten checks per lookup. One verdict.
Every lookup runs the full validation pipeline in parallel. You can call any step individually through the API.
- 01Domain check and validation
MX and A records, typo correction, freemail and disposable domain lookup.
- 02Syntax validation
RFC 5321 and 5322 across the full address, including quoted-local-part edges.
- 03Disposable email detection
9,000+ disposable domains, updated daily from public and private lists.
- 04Catch-all identification
Detects domains that accept everything, so they do not inflate your stats.
- 05SMTP bounce check
Graceful RCPT TO probe against the real MX. No mail ever sent.
- 06Risk and fraud scoring
Abuse history, velocity and public-signal combination into a 0 to 100 score.
- 07Sender reputation
SPF, DKIM, DMARC and blacklist status, monitored continuously.
- 08Owner lookup
Public profile data, company affiliation and professional signals.
deliverability
Know your sending reputation
before your recipients do.
SPF, DKIM, DMARC and 87 public blacklists, checked on schedule, alerted on change. The numbers that decide whether you hit the inbox.
integrations
Plug into the tools you already run.
Email list monitoring
Re-check lists on a schedule. Anything that degrades from deliverable to risky, bounce or disposable is flagged.
API and webhooks
POST results straight into your ESP, CDP, warehouse. No polling, no cron job.
Ops alerts
Slack, PagerDuty, Opsgenie, Datadog, Grafana. First-party wire.
questions
Everything you usually ask
before running an email lookup.
If your question is not here, it is in the docs, or one mail away.
Read the full reverse lookup guide01 Is the email lookup really free?
Yes. The lookup at the top of this page runs the full pipeline: owner, domain, deliverability, reputation. No signup, no credit card, no "upgrade to see the result" wall. Heavy use moves to the API tier; everything you see in the live result on this page is part of the free lookup.
02 What can I find out from an email address?
The person or organisation behind the address, where public. The domain WHOIS and registrar. Deliverability signals (syntax, MX, SMTP, disposable, catch-all). Sender reputation (SPF, DKIM, DMARC, blacklists). And any public breach mentions tied to the address.
03 Will the address owner know I looked them up?
No. We never send a mail. The SMTP check is a graceful RCPT TO probe that disconnects before sending data, so the mailbox never sees a delivery attempt. Your lookup is private to you.
04 Where does the data come from?
14 public reputation sources plus 87 real-time blocklists on every lookup. WHOIS, public DNS, RBL providers, public profile pages, breach indices and our own 12-year crawl. Each line in the result page is sourced so you can see where a signal came from.
05 Can I look up many addresses at once?
Yes. Paste up to 100 addresses for a batch result, or use the API for higher volumes. CSV export is available on every result page.
Have an address in mind?
Look it up now.
free · no signup · result in under a second