Data & verification

Where every contact comes from, how emails are verified and why some can't be found.

• Where our data comes fromEvery provider OmniLead reads from, what each one supplies, how the crawler behaves, and the sources OmniLead will never use.6 min
• Free public sources for local businessesLeads lensThe no-key public registers behind the Leads lens for local businesses and licensed professionals, what each one supplies, the rules OmniLead follows for each, and how to filter by them.4 min
• Provenance explainedEvery email, phone and fact in OmniLead shows its source URL, provider and the date it was found. Here's how to read it and use it.3 min
• Email verification statusesWhat Valid, Risky, Catch-all, Invalid and Unknown mean, how the 0–100 confidence score works, and what to do with each.4 min
• Phone number formatsOmniLead stores every phone number in E.164 format. Here's what that means, how numbers are normalized and how to import them.2 min
• Why a contact can't be foundThe common reasons OmniLead shows no email or phone for someone, what you can try next, and why you're never charged for it.3 min