Contact research
Check email-finder results before trusting them
Understand what found, valid and verified actually mean in a contact research report.
An email-finder result is a claim that needs context. Found may mean an address appeared on a page. Valid may mean it has the right shape. Verified may refer to a technical check with limits. Ask the tool to explain its labels before acting on them.
| Label | Useful evidence | Remaining uncertainty |
|---|---|---|
| Published | An address on a named page with a check date | It may be outdated or intended for a different purpose |
| Syntax checked | A parser accepts the format | The mailbox may not exist |
| Domain checked | The domain has relevant mail configuration | A particular recipient may still be invalid |
| Mailbox test claimed | Method and timestamp supplied by the tool | Catch-all behavior and later changes can mislead |
| Person confirmed | The person supplied or confirmed the route | Their preferences still govern future contact |
Do not send a probe campaign to everyone in a file to discover which addresses bounce. That shifts the cost of your data quality problem onto recipients and your sender reputation. Review sources and the intended use before any message is considered.
Evaluate a small sample
- 1
Ask for provenance
For each sample, request the source type and last check time. Distinguish a public company contact route from an inferred personal address. Mark missing provenance as unknown.
- 2
Review the purpose
Read the source page if available. An address for abuse reports or job applications should not be repurposed as a sales contact merely because it is public.
- 3
Inspect technical labels
Use a free format checker for obvious input mistakes, but do not describe it as mailbox verification. Ask how the vendor handles catch-all domains, temporary failures and stale results.
- 4
Score usefulness, not volume
Count records that have relevant context and an appropriate contact route. Compare that count with the sample size. A smaller transparent result may be more useful than a large opaque export.
Venmail's prospect discovery is a separate capability with plan-dependent access; do not assume it is an unlimited free database. The free value here is the review worksheet and the discipline of checking what a result actually proves.
A trustworthy report explains
- Where the address came from
- When it was checked
- What each confidence label means
- How unknowns are handled
- Whether the route fits the intended purpose
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Venmail publishes this guide and may be one of the products discussed. We compare providers on consistent dimensions, link to primary documentation and state non-fit cases. Product limits and pricing should be rechecked before purchase.