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Accept-all behavior
A catch-all signal indicates that the domain appears willing to accept recipient checks broadly, including for addresses that may not represent real mailboxes.
Catch-all and accept-all domains
Catch-all email verificationKeep mailbox uncertainty visible
Find addresses hosted on domains that appear to accept every recipient, then handle them as a separate decision—not as automatically valid or invalid.
- Input
- Paste addresses or upload CSV
- Output
- Verdicts with supporting signals
- Fair billing
- Unknown results do not use credits
What it means
A catch-all server can answer yes without confirming the mailbox
Mailbox verification normally asks the receiving server about a specific recipient. An accept-all configuration gives the same favorable response for many recipient names, so the response only tells you about the domain's behavior. It does not establish that the individual inbox exists, is monitored, or will accept a future message.
Useful context
What the catch-all flag actually means
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Mailbox uncertainty
Because the server does not distinguish one recipient from another during the check, a positive SMTP response cannot confirm the individual mailbox.
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Supporting context
Keep syntax, domain, role-account, disposable, and other available signals attached to the address. Catch-all is one condition, not a complete verdict about the contact.
The dashboard workflow
From raw list to a usable decision
No developer integration is required. Work through a list in the browser and keep the result attached to the address.
- 01
Paste or upload
Sign in to the dashboard, create a list, then paste email addresses or upload a CSV. Keep the original file as your source of record.
- 02
Run verification
Peopledat processes the list and returns verdicts with the supporting signals available for each address.
- 03
Review and export
Inspect uncertain and risk-marked results, decide what fits your sending policy, and export the list for your next workflow.
Read the result
Verdicts are decision support
Keep the verdict and its context together. A single label cannot account for consent, engagement, sender reputation, or a receiving server changing its behavior later.
Safe
The available checks support using the address. It is a positive verification signal, not a promise of delivery or inbox placement.
Invalid
The checks found a strong reason not to use the address, such as invalid structure, domain, or mailbox response.
Review the signal
Catch-all, disposable, role-account, inbox-full, disabled, and similar conditions need a policy decision rather than one universal rule.
Unknown
The receiving system did not provide a decisive answer. Peopledat does not deduct credits for results classified as unknown.
Put the result to work
Handle catch-all addresses with a deliberate policy
Segment catch-all results
Keep them separate from both confirmed invalid results and stronger positive results so their uncertainty remains visible downstream.
Use first-party evidence
A known customer relationship, reply, prior engagement, consent record, or hard bounce can be more informative than another identical mailbox probe.
Match the decision to the risk
For sensitive or high-volume sends, use a more conservative policy. For an expected one-to-one message to a known contact, your context may support a different choice.
Clear limits, so you can use the result responsibly
- Email verification cannot guarantee delivery, inbox placement, engagement, or future mailbox availability.
- Receiving servers may hide mailbox status, throttle checks, or accept every recipient. Those cases can remain uncertain.
- Risk flags are context, not proof of fraud, consent, or a person's intent.
- Use the dashboard for list work, the versioned REST API for server integrations, or the origin-bound widget for advisory form checks. No official SDK is required.
Questions, answered plainly
Frequently asked questions
What is a catch-all email domain?
A catch-all or accept-all domain is configured so its mail server appears to accept email for a broad range of recipient names. That prevents a mailbox check from reliably distinguishing an existing address from an invented one.
Can a catch-all mailbox be verified with certainty?
Usually not through the same SMTP recipient check. Actual delivery, a reply, or trustworthy first-party engagement can add evidence, but no verifier should turn an accept-all server response into a guaranteed mailbox claim.
Is every catch-all address invalid?
No. Many real business addresses are hosted on catch-all domains. The flag describes the server configuration and the resulting uncertainty; it does not prove that the mailbox exists or does not exist.
Are catch-all and unknown the same result?
Not necessarily. Catch-all is a specific condition, while unknown means the verification produced no decisive verdict. Peopledat does not deduct credits for results classified as unknown; use the displayed verdict rather than assuming every catch-all result is unknown.
Bring a list. Leave with a clearer decision.
Paste addresses or upload a CSV, review the evidence behind each result, and pay nothing for verdicts classified as unknown.
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