Catch-All Email Verification
Most validators mark catch-all emails risky and leave you to guess. OrbiSearch confirms whether the mailbox exists without sending an email, and tells you deliverable or undeliverable. Including behind secure email gateways and on greylisted servers.
100 free credits on sign-up, enough for 500 validations. 0.2 credits per email, catch-alls included.
Updated
What is catch-all email verification?
Catch-all email verification checks whether a specific mailbox exists on a domain that accepts mail for any address. A standard check can't tell, because a catch-all server says yes to every address, real or not. OrbiSearch confirms the mailbox without sending an email and returns deliverable or undeliverable instead of risky.
Catch-alls are a big share of every B2B list, and most of them can be verified.
31.4%
of business email domains are catch-all
~86%
of catch-all domains can potentially be verified
~1 in 7
are self-hosted and unverifiable by any tool without sending
From our analysis of 1.6 million business domains and 23M+ verifications. Read the catch-all domains research
Why do most validators mark catch-all emails as risky?
Most validators hand catch-alls back as risky or unknown. You either drop the contact or send blind and take the bounces. Some send real emails to your prospects and make you wait days for the result.
OrbiSearch tells you which catch-all emails are deliverable and which aren't, in seconds, in the same check as the rest of your list. One tool and one price for every B2B email, catch-all or not.
See how we compare with BounceBan, ZeroBounce and MillionVerifier.
How does catch-all email verification work?
Every email gets the standard mailbox checks first. When the domain turns out to be catch-all, our catch-all verification layer confirms whether that specific mailbox exists. No email is sent at any point.
Catch-all domain
Mail server found
Address accepted
Catch-all: on to layer 2
Mailbox confirmed
No email sent
Safe to send
Automatic. Runs on every validation, in the web app and the API. Nothing to switch on.
Fast. Seconds per email, and 10,000 emails in under 10 minutes.
Conservative. We mark an email safe only on a conclusive signal, for the lowest false positive rate among catch-all validators.
The emails other validators give up on
Catch-alls rarely come alone. Gateways and greylisting hide the mailbox too, and we validate behind all three.
Most validators
unknownOrbiSearch
deliverableCatch-all domains
The server accepts mail for any address, so a standard check can't tell whether a specific mailbox exists. OrbiSearch confirms whether it does, in seconds, and returns deliverable or undeliverable without sending an email.
Most validators
unknownOrbiSearch
deliverableSecure email gateways
Gateways like Mimecast, Proofpoint and Barracuda answer verification checks themselves, so the domain looks catch-all whatever sits behind it. 99.9% of domains behind a Barracuda gateway are catch-all. OrbiSearch still confirms whether the mailbox behind the gateway exists.
Most validators
unknownOrbiSearch
undeliverableGreylisted servers
Greylisting servers turn away the first check and expect a retry later, and some domains combine greylisting with catch-all. Most validators give up on the first rejection. OrbiSearch handles the retry and returns a verdict instead of an unknown.
Can every catch-all email be verified?
No tool can verify every catch-all. About 1 in 7 catch-all domains are self-hosted, and for those the only way to confirm a mailbox is to send a message and watch for a bounce. A tool claiming to verify them all is guessing.
When we can't confirm a mailbox, we mark it Risky instead of guessing. That's what keeps a Safe result meaning safe.
We confirmed the mailbox exists. Send to it.
We confirmed the mailbox doesn't exist. Remove it.
A catch-all where nobody can confirm the mailbox without sending. We tell you, rather than guess.
Every status and reason is explained in verification statuses.
How much does catch-all email verification cost?
Catch-all verification isn't an add-on. Every email costs the same 0.2 credits, catch-all or not, with no second tool and no separate catch-all credit.
0.2
Credits per email, catch-alls included
$0.20
Per 1,000 validations on our largest packs
Credits never expire and work on every product
More reachable contacts from the same list
The catch-alls other validators discard are prospects you can still reach.
GTM and lead-gen agencies
Catch-all contacts other tools tell your clients to drop are often the best accounts on the list. Verify them, send to the deliverable ones and keep bounce rates low on every client's campaign.
OrbiSearch for GTM engineers and agenciesOutbound and SDR teams
Everyone runs the same lists. When your validator resolves the catch-alls your competitors discard, those prospects hear only from you. Upload a CSV and get results back in minutes.
Try the free bulk validatorData and enrichment platforms
Every catch-all contact you can mark deliverable is one more record you can stand behind and sell. Verify over the API at volume, with one price per email whatever the domain.
OrbiSearch for data platformsFinding emails too? Every email our email finder returns is already verified, including on catch-all domains, so there's nothing to revalidate.