How prospiq finds emails

Multiple verified sources, real SMTP checks, and a guarantee that you only pay for what works.

Last updated May 11, 2026

When you ask prospiq for someone's email, we don't just look them up in a list. We run a sequence of checks that combine multiple verified sources with live mailbox verification — and only return an address we're willing to charge you for.

What "finding an email" actually means

There are roughly two ways the industry handles email enrichment:

  1. Cheap and dishonest: guess an address from common formats, return it without checking, charge you regardless of whether it bounces.
  2. Expensive and reactive: find a candidate, run one verification check, charge you whether the check passes or fails.

Most tools do option 1 with a thin marketing layer on top. prospiq does neither.

We use multiple verified data sources to identify candidate addresses, then we test each one with a real mailbox check before returning it. If the address doesn't pass our checks, you don't see it. And you don't pay for it.

What "verified" means

When we say an email is verified, we mean:

  • The domain accepts mail. The receiving server responded to our connection.
  • The mailbox exists. The server confirmed the specific address would accept a message.
  • It's not a catch-all. Catch-all domains accept everything, which makes verification meaningless. We flag and exclude them.
  • It's not disposable. No temporary inbox services.
  • It's not a role address. Generic addresses like info@ or support@ aren't included unless that's specifically what you asked for.

Our guarantee

Every email prospiq returns has cleared every check above. If we couldn't find an address that passes all of them, the lookup returns no result and you spend zero credits.

That's the rule we built the company on: you're never charged for an unverified email.

When emails come back empty

Sometimes we can't find anyone. Common reasons:

  • The person doesn't have a discoverable work email (left the company, never had one publicly tied to them, very small private business)
  • The company uses a domain we haven't seen before
  • The mailbox exists but the server isn't responding to verification right now

When this happens, you spend nothing. Try again later — server availability can change — or contact support if you think we should be finding someone we aren't.

Related

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Single contact search

How the search page works — three modes, what each costs, and how to read the result.

Bulk upload from CSV

Upload a CSV of names + companies and get verified emails or phones for every row that we can find.

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