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Catch-All Resolution
Verify Emails on Catch-All Domains
Some domains accept any address you send — real or invented. Standard tools see this and mark everything unknown. We check whether the actual mailbox exists and return a confirmed result.
3 credits per confirmed result · Unresolvable addresses cost nothing
The problem
Why Catch-All Domains Block Standard Email Verification
When a mail server accepts every address you send — including completely invented ones — there is no way to determine from the server response alone whether a specific mailbox exists. Standard verification reads that response and stops. Every address on that domain gets labelled unknown, including real ones belonging to real people you want to reach.
Thirty to forty percent of B2B domains behave this way. Writing off catch-all results means writing off a significant portion of every B2B list you will ever work with.
Catch-all resolution
Catch-All Email Verification — Confirmed, Not Guessed
3 credits per confirmed result. If we cannot determine the result, you pay nothing. The address stays flagged as catch-all and no resolution credit is charged.
How it works
How Catch-All Resolution Works
Two ways to use catch-all resolution.
After bulk verification
Catch-all addresses come back flagged at no cost. From your results you select which ones to resolve — all of them, a specific domain, or a manual selection.
Immediate resolution
Run resolution immediately on any individual address without a prior verification step. Paste an address, trigger resolution, get a confirmed result.
Unresolvable addresses remain flagged and are never charged.
Credit strategy
Email Pattern Lookup Before Catch-All Resolution
Know which addresses are worth resolving before spending 3 credits each. One domain lookup — 7 credits — tells you everything.
Addresses matching first.last@ are high priority. Non-matching patterns are lower probability — resolve selectively.
One domain lookup. Charged once, regardless of how many addresses from that domain you then resolve.
Per resolved address. Prioritise pattern-matching addresses first — fewer credits spent, higher proportion of confirmed deliverables back.
Pattern lookup + catch-all resolution
The combination that recovers usable contacts from domains other tools write off entirely.