Free reverse email lookup: see who is behind any email address
What is a reverse email lookup?
A reverse email lookup starts from an email address and works backward to what is behind it. Instead of a name-and-photo profile, it reads the live technical and reputation record of the address: whether it is real and deliverable, which provider serves it, how old its domain is, and whether it has appeared in breaches.
The questions a reverse email lookup answers are familiar individually:
- Is the address real, and can it receive mail?
- Is it from a disposable provider or a free webmail service?
- How old is the domain behind it, and who registered it?
- Does the username pattern look human or generated?
- Has the address appeared in known data breaches?
- How risky does the address look overall?
That record is often more useful than a name. A scraped profile can be wrong or stale, but the technical record reflects what the address is doing right now. It is why fraud teams, sales teams, and moderators reverse-check an email before trusting it.
How reverse email lookup works
When you submit an address, the lookup runs four steps:
- Format and deliverability check. The tool validates the syntax, resolves MX records, and runs an SMTP probe, so you know immediately whether the address is real and reachable.
- Signal collection. For deliverable addresses, the tool gathers the reputation record in parallel: disposable status, free-email status, role-address status, catch-all status, username heuristics, domain age, registrar, risky TLD flag, and breach history.
- Sender resolution. Where public data exists, the underlying API also returns sender fields: first name, last name, email provider, and organization. These appear in the API response documented below.
- Response. The result combines everything into one readable record, including the address_risk_status and domain_risk_status grades, so you can judge the address at a glance.
What a reverse email lookup reveals
The parts of the record that answer the real question, who is behind this address:
Deliverability and provider. Whether the mailbox is real, and whether it lives on a free webmail service, a company domain, or a throwaway provider. A real person usually has a deliverable address on an established provider.
Domain age and registrar. A brand-new domain behind an unfamiliar sender is the classic mark of a fresh scam identity, while a domain registered years ago points to an established owner. The lookup shows the registration date and registrar.
Username shape. Name-shaped usernames (maria.lopez@) are usually human-chosen. Random-character strings (h7k4j2qx@) are statistically unlikely to be a person. It is a small signal that reads surprisingly well.
Sender fields. Where public data exists, the underlying Email Reputation API returns the sender's first name, last name, email provider, and organization, the closest thing to a direct answer that live data can give.
Breach history. An address that appears in known breaches has existed for a while and belongs to a real person, though possibly a compromised one. A total absence of history on an address claiming to be established can cut the other way.
No single field is the answer on its own. The picture comes from reading them together, which is what the address_risk_status and domain_risk_status grades summarize.
Use cases for reverse email lookup
Verifying an unknown sender: Before replying to an unexpected email, paying an invoice, or clicking a link, reverse-check the address. A deliverable address on a ten-year-old company domain with no risk flags reads very differently from a two-week-old domain with a generated username.
Screening signups and leads: Run new signups and inbound leads through the lookup to separate real people from throwaway identities. Disposable addresses, brand-new domains, and suspicious usernames are the standard marks of fake accounts and junk leads. The same check runs programmatically through the API at signup time.
Checking your own exposure: Look up your own address to see what anyone else can see: your deliverability record, your domain's posture, and whether your address appears in known breaches. If it does, rotate the passwords on the accounts tied to it.
Marketplace and dating safety: Before trusting someone you only know by email, check whether the address is real, how old its domain is, and whether the record looks human. It will not hand you a verified identity, but it filters out the obvious fakes fast.
See what the API returns
Response parameters
email_address
email_deliverability.status
email_deliverability.status_detail
email_deliverability.is_format_valid
email_deliverability.is_smtp_valid
email_deliverability.is_mx_valid
email_deliverability.mx_records
email_quality.score
email_quality.is_free_email
email_quality.is_username_suspicious
email_quality.is_disposable
email_quality.is_catchall
email_quality.is_subaddress
email_quality.is_role
email_quality.is_dmarc_enforced
email_quality.is_spf_strict
email_quality.minimum_age
email_sender.first_name
email_sender.last_name
email_sender.email_provider_name
email_sender.organization_name
email_sender.organization_type
email_domain.domain
email_domain.domain_age
email_domain.is_live_site
email_domain.registrar
email_domain.date_registered
email_domain.date_last_renewed
email_domain.date_expires
email_domain.is_risky_tld
email_risk.address_risk_status
email_risk.domain_risk_status
email_breaches.total_breaches
email_breaches.date_first_breached
email_breaches.date_last_breached
email_breaches.breached_domains
email_breaches.breached_domains[].domain
email_breaches.breached_domains[].date_breached
API Endpoint
curl --request GET \
--url https://emailreputation.abstractapi.com/v1{
"email_address": "benjamin.richard@abstractapi.com",
"email_deliverability": {
"status": "deliverable",
"status_detail": "valid_email",
"is_format_valid": true,
"is_smtp_valid": true,
"is_mx_valid": true,
"mx_records": [
"gmail-smtp-in.l.google.com",
"alt3.gmail-smtp-in.l.google.com",
"alt4.gmail-smtp-in.l.google.com",
"alt1.gmail-smtp-in.l.google.com",
"alt2.gmail-smtp-in.l.google.com"
]
},
"email_quality": {
"score": 0.8,
"is_free_email": false,
"is_username_suspicious": false,
"is_disposable": false,
"is_catchall": true,
"is_subaddress": false,
"is_role": false,
"is_dmarc_enforced": true,
"is_spf_strict": true,
"minimum_age": 1418
},
"email_sender": {
"first_name": "Benjamin",
"last_name": "Richard",
"email_provider_name": "Google",
"organization_name": "Abstract API",
"organization_type": "company"
},
"email_domain": {
"domain": "abstractapi.com",
"domain_age": 1418,
"is_live_site": true,
"registrar": "NAMECHEAP INC",
"registrar_url": "http://www.namecheap.com",
"date_registered": "2020-05-13",
"date_last_renewed": "2024-04-13",
"date_expires": "2025-05-13",
"is_risky_tld": false
},
"email_risk": {
"address_risk_status": "low",
"domain_risk_status": "low"
},
"email_breaches": {
"total_breaches": 2,
"date_first_breached": "2018-07-23T14:30:00Z",
"date_last_breached": "2019-05-24T14:30:00Z",
"breached_domains": [
{ "domain": "apollo.io", "date_breached": "2018-07-23T14:30:00Z" },
{ "domain": "canva.com", "date_breached": "2019-05-24T14:30:00Z" }
]
}
}API Response
Reverse email lookup FAQ
What is a reverse email lookup?
A reverse email lookup starts from an email address and returns what is known about it: whether it is deliverable, which provider and domain serve it, how old the domain is, whether the address appears in breach data, and how risky it looks overall. Where public data exists, the underlying API also returns the sender's name and organization.
Can I find out who owns an email address for free?
Sometimes. This tool shows the address's full technical and reputation record free, and the Email Reputation API adds sender name and organization fields where public data exists. No live data source can name the owner of every address, and sites that promise that usually end at a paywall with scraped, often stale, profiles.
Can a reverse email lookup find social media profiles?
Not this one. Profile-matching tools scrape social networks and break whenever the networks lock down. This lookup reads live technical and reputation data instead: deliverability, provider, domain age, breaches, and risk grades. That record is usually enough to judge whether an address can be trusted, which is what most people are really asking.
Is it legal to look up an email address?
In most jurisdictions, yes. The lookup reads public technical records about the address itself (DNS and MX data, domain registration, published breach corpora) and the owner is not notified. Using results to harass or impersonate someone can cross into illegal territory depending on local law. Standard business uses like fraud screening and lead verification are not restricted.
Can a reverse email lookup show the person's name?
Sometimes. The email_sender fields in the API response return the first name, last name, email provider, and organization tied to an address where public data exists. Coverage is best for business addresses on company domains and weakest for personal webmail. The tool above shows the reputation record; the sender fields come through the API.
How accurate is a reverse email lookup?
The technical record is highly accurate because it is read live: deliverability comes from the mail server itself, domain age from registration records, and breach data from published corpora. Sender name coverage varies with the public data available for each address. Treat the output as evidence to combine, not a verdict on its own.
More email intelligence tools
