This free reverse email lookup shows who an email address belongs to.
Enter an email address to see whether it belongs to a real person, with part of the name and the city and state. Nothing is sent to it, and no signup is needed.
Free & rate-limited. No signup required to try.
Example resultThis is a real lookup we captured on 2026-08-23 for jeff@amazon.com. Run any lookup above and it is replaced with yours.
This address belongs to J███ S████
We matched this email to a person. Sign up free to reveal the full name, phone and employer.
A reverse email lookup starts with an email address and finds the person it belongs to. 1Lookup's free reverse email lookup tells you whether an address matches a real person, shows part of the name, gives the city and state on record and says whether a phone number is on file. Nothing is sent to the address.
- No signup to try
- Name, city and state
- Nothing is sent to the address
- Phone on file, yes or no
Need this at scale? Reverse Email Lookup API
Append names, postal addresses and phone numbers to the email addresses you already have.
On this page
A reverse email lookup finds the person behind an email address.
An email address often arrives with no name attached: a form submission, a message from someone claiming to be a colleague, a contact in a spreadsheet nobody documented. A reverse email lookup runs the search in the direction you need, from the address to the person, and tells you who it belongs to.
Enter the address above and the lookup matches it against consumer and business contact records. It tells you whether the address belongs to a real person, shows part of the name, gives the city and state on record and says whether a phone number is linked to the same person. That is usually enough to answer the real question: is this a genuine person with a history, or an address that exists nowhere else?
Coverage varies by the type of address. Business addresses on company domains match well, because that data is comparatively public. Personal addresses match less often, and freshly created ones frequently do not match at all. A no-match is therefore weak evidence on its own: it can mean the address is new or private just as easily as it can mean the address is fake. When what you need to know is whether an address is deliverable rather than who owns it, our free email verifier is the tool for that.
What do the paid contact-data suites charge for this?
Matching an email to a name and address is a paid product at every data-quality vendor. Melissa bills it in credits, at 4 credits for a mailbox email check and 3 for a full US contact check, and we wrote its whole rate card out in our breakdown of Melissa pricing. To check whether an address can still receive mail before you write to it, use our free email checker. To find who a US phone number is listed to instead, try the free reverse phone lookup.
A reverse email lookup returns these fields, and each one answers a different question.
This is an invented result for a made-up address, laid out the way a lookup comes back. The first five fields are free on this page, and a free trial opens the full record.
- Person identifiedYes
- NameM███ O████
- CityOakland
- StateCA
- Phone on fileYes
Opens with a free trial
- Full nameMaya Ortiz
- Phone and mobile(415) 555-0132
- Postal address100 Example St, 94612
- EmployerExample Co
Person identified
Whether the address matched a person in consumer and business contact records. A no is common for new and personal addresses, so on its own it does not mean the address is fake.
Name
The name on the matched record, with most letters hidden in the free result. It is enough to tell whether it fits the person you expected.
City
The city on the matched record, which shows whether the person is where they say they are.
State
The state on the matched record.
Phone on file
Whether a phone number is linked to the same person. A linked phone is a sign the record has real substance behind it.
Full name
The first and last name on the record, with nothing hidden.
Phone and mobile
The landline and mobile numbers on the record, when it has them.
Postal address
The street address and ZIP code on the record, alongside the city and state.
Employer
The company and job title, when the record has one.
A reverse email lookup takes three steps, and nothing is sent to the address.
Enter the email address
Type or paste any address. We normalise it before searching, so capitalisation and stray whitespace do not matter.
We match it against contact data
The lookup searches consumer and business records for a person tied to that address, along with the location and phone numbers associated with the same record.
See who it belongs to
You get a masked name, the city and state, and whether a phone is on file. Sign up free to reveal the full name, numbers, address and employer.
A reverse email lookup runs from the address to the person, and never writes to the inbox.
This is what happens to one address you enter above.
- You enter an email addressWe normalise it first, so capitals and stray spaces do not matter.
- It is matched against contact recordsConsumer and business records tied to the same address.Nothing is sent to the address, so its owner is never told.
- A person is found, or notBusiness addresses match more often than new personal ones, so a no-match is weak evidence on its own.
- You see who it isPart of the name, the city and state, and whether a phone is on file. A 7-day free trial shows the full record.
There are five common ways to find out who owns an email address, and each one shows something different.
The free methods work best on business addresses that appear on public pages. Personal and newly created addresses rarely show up anywhere, which is why a match against contact records is often the only way to put a name to them.
| Method | What it costs | What it shows | Where it falls short |
|---|---|---|---|
| Search the address in Google, in quotes | Free | Public pages that mention the exact address | Personal addresses almost never appear on public pages |
| Search LinkedIn and other social sites | Free | A profile, if the person listed the address publicly | Most profiles hide their email address |
| Visit the domain in the address | Free | The company behind a work address | Says nothing about the person, and tells you nothing for Gmail or Yahoo addresses |
| Run an email verifier | Free here | Whether the mailbox exists and can receive mail | Shows whether the address works, not who owns it |
| Run 1Lookup's reverse email lookup | Free here, 10 credits for the full record | Whether the address matches a person, part of the name, city, state and whether a phone is on file | New and personal addresses match less often than business ones |
You can find the people behind a whole list of email addresses with one CSV file.
The free tool checks one address at a time. With a 1Lookup account you upload a CSV file, pick the column that holds the addresses and download the same file back with the contact columns filled in on every row that matches. These are 7 of the columns it adds.
| matched | fullName | phoneNumber | cellNumber | city | state | company | |
|---|---|---|---|---|---|---|---|
| maya.ortiz@example.com | Yes | Maya Ortiz | (415) 555-0132 | (415) 555-0188 | Oakland | CA | Example Co |
| d.brooks@example.org | Yes | Daniel Brooks | (312) 555-0144 | Chicago | IL | ||
| hello@example.net | No | ||||||
| s.patel@example.com | Yes | Sana Patel | (212) 555-0187 | Brooklyn | NY | Example Studio |
- 10 credits a lookup, the same price as one API call.
- Up to 2 million rows in one CSV file.
- Up to 200 API requests per 10 seconds for each API key, and each account can make up to 1,000 requests a minute in total across all its keys.
The reverse email lookup API returns the same match as JSON from one request.
Send the address to the reverse email endpoint with your API key. Each request costs 10 credits, standard lookups are limited to 200 requests per 10 seconds for each API key, and each account can make up to 1,000 requests a minute in total across all its keys. The match is in classification.matched, and the name, phones, address and employer are under insights.reverse_email_result.
curl -X POST https://app.1lookup.io/api/v1/reverse-email-append \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"email": "maya.ortiz@example.com"}'import requests
response = requests.post(
"https://app.1lookup.io/api/v1/reverse-email-append",
headers={"Authorization": "Bearer YOUR_API_KEY"},
json={"email": "maya.ortiz@example.com"},
)
data = response.json()["data"]
print(data["classification"]["matched"])const response = await fetch('https://app.1lookup.io/api/v1/reverse-email-append', {
method: 'POST',
headers: {
'Authorization': 'Bearer YOUR_API_KEY',
'Content-Type': 'application/json'
},
body: JSON.stringify({ email: 'maya.ortiz@example.com' })
})
const { data } = await response.json()
console.log(data.classification.matched)Response
{
"success": true,
"data": {
"request": { "type": "reverse_email_append", "input": "maya.ortiz@example.com" },
"classification": { "matched": true },
"insights": {
"reverse_email_result": {
"matched": true,
"contact": { "fullName": "Maya Ortiz", "firstName": "Maya", "lastName": "Ortiz" },
"phones": {
"phoneNumber": "4155550132",
"cellNumber": "4155550188"
},
"address": { "line1": "100 Example St", "city": "Oakland", "state": "CA", "zipCode": "94612" },
"company": { "name": "Example Co", "jobTitle": "Operations Manager" }
}
},
"metadata": { "credits_used": 10, "credits_remaining": 9990 }
}
}To run the same lookup from your own software or a CRM, see our reverse email lookup API.
It shows who is behind an address, not just whether it works.
An email verifier tells you whether an address can receive mail. This tells you who is on the other end of it, which is a different and often more useful question.
It shows the city and state on record and whether a phone is linked.
A location and a linked phone number are what tell you the record has real substance behind it.
Nobody is told that you looked.
The lookup reads contact records. It never sends an email to the address, so the owner is not notified.
Whole lists run through the dashboard or the API.
The same match behind the free tool runs at scale through the reverse email lookup API, so a one-off check and a 50,000-row append use the same records.
Who uses this tool
People use it to put a name to an unknown sender.
Someone emails claiming to be from a company you deal with. Check whether the address belongs to a real person, then confirm with the company directly if anything is off.
Sales teams use it to qualify an inbound lead.
A form submission with an address and nothing else. Put a name and location to it before a rep spends time on it.
It fills the gaps in a contact list.
Records with an email and no name are dead weight in a CRM. The full record turns them back into contacts you can use.
It helps you check someone before you send money or goods.
Before you pay or ship to someone you have only met by email, it is worth knowing whether the address has any history at all.
Frequently asked questions
Is there a reverse email lookup that's actually free?
Yes. This tool is free to try with no account: five lookups a day here and fifteen a day across all our free tools. The free result tells you whether the address matches a person and shows part of the name, the city and state, and whether a phone is on file. A 7-day free trial unlocks the full record, and each full lookup costs 10 credits, so the Starter trial covers about 100 of them.
How do I do a reverse email lookup for free?
Start by searching the address in Google inside quotes, then check the website of the domain after the @ sign. If neither turns up a name, run the address through the free lookup above, which checks it against consumer and business contact records in a few seconds.
Can I find out who owns a Gmail or Yahoo address?
Sometimes. Personal addresses match less often than work addresses, because far fewer of them appear in contact records. When a personal address does match, you see part of the name, the city and state, and whether a phone is on file.
Why did my search return no match?
Most often the address is new, personal, or an alias that has never appeared in contact records. A no-match does not mean the address is fake. To check whether it can receive mail at all, run it through the free email checker.
Does the person know I looked up their email address?
No. The lookup reads contact records and never sends anything to the address, so the owner is not notified.
Is this the same as an email verifier?
No. An email verifier checks whether the address exists and can receive mail. A reverse email lookup finds the person it belongs to. Many people want both: check deliverability with the email checker, and find the owner here.
What does the full record include?
The full name, the street address and ZIP code, the phone and mobile numbers, and the employer when the record has one.
Where does the data come from?
Licensed consumer and business contact records, matched at the moment you search. It is the same match our reverse email lookup API runs in bulk.
Can I look up many email addresses at once?
Yes, but not on this page. A free account includes CSV upload for batches, and the reverse email lookup API handles high volume from your own systems.
Is there a reverse email lookup API?
Yes. Send an address to the 1Lookup reverse email endpoint and the JSON response carries the match, the full name, the phone and mobile numbers, the postal address and the employer, at 10 credits a lookup and up to 200 requests per 10 seconds for each API key, and each account can make up to 1,000 requests a minute in total across all its keys. The code example is on this page.
How is this different from the reverse phone lookup?
This one starts from an email address. The reverse phone lookup starts from a US phone number and shows who that number is listed to.
Is reverse email lookup legal?
Yes. Looking up who owns an email address using licensed records is lawful in the US for ordinary purposes, like checking who emailed you or confirming a counterparty before a deal. The results must not be used for credit, insurance, employment or tenancy decisions, and if you contact the person commercially, CAN-SPAM and GDPR apply where relevant.