How Gamalogic Verifies Email Accuracy (99.6% Explained)

Accuracy claims in the email verification industry vary widely because there’s no single agreed-on way to measure them. This page explains exactly how Gamalogic’s email validation API verifies each address, what our 99.6% accuracy figure means in practice, and what it does and doesn’t cover so you know exactly what you’re getting before you rely on it for your campaigns.

How Gamalogic verifies every email address

Every email submitted to Gamalogic via API, bulk upload, or real-time widget asses through four verification layers:

The four-layer email verification process A vertical flow diagram showing four sequential verification steps: syntax check, domain and MX validation, SMTP-level verification, and risk scoring, each narrowing down the pool of addresses. 1. Syntax check Confirms correct address format 2. Domain & MX validation Confirms domain can receive mail 3. SMTP-level verification Confirms the mailbox is live 4. Risk scoring Flags disposable, role-based & catch-all Result returned Valid • Invalid • Risky • Unknown via API response or dashboard export
Every address passes through all four layers before a final status is returned.

Based on these four layers, each address is returned with a clear status: Valid, Invalid, Risky, or Unknown.

What “99.6% accuracy” means

Our 99.6% accuracy rate applies to addresses returned as Valid. In independent and internal testing, of every 10,000 addresses marked Valid by Gamalogic, 9,960 are confirmed deliverable meaning fewer than 4 in 1,000 result in a hard bounce.

99.6 percent accuracy measured across 10,000 verified addresses A stat card showing 9,960 out of 10,000 addresses marked valid were confirmed deliverable, illustrated with a 99.6 percent filled progress bar. 99.6% measured accuracy on addresses marked Valid 9,960 confirmed deliverable Per 10,000 addresses verified as “Valid”: 9,960 confirmed deliverable Fewer than 40 result in a hard bounce
Based on internal and independent testing of addresses marked Valid.
Our guarantee: If an address marked Valid by Gamalogic results in a hard bounce, we’ll credit the verification cost back to your account. Submit bounced addresses through your dashboard or to support@gamalogic.com within 30 days of verification.

What our accuracy guarantee doesn’t cover

We believe in being upfront about the limits of email verification, because no provider including us can guarantee 100% deliverability for every category of address.

What the Gamalogic accuracy guarantee covers versus what it does not cover Two-column comparison: covered items include valid addresses that hard bounce, with credit issued; not covered items include catch-all domains, addresses that go inactive later, and inbox placement. Covered ✓ Address marked Valid that hard-bounces on send ✓ Credit issued to account for confirmed misses ✓ SMTP-confirmed mailbox existence at time of check Not covered ✗ Catch-all domains (flagged as Risky, not resolved) ✗ Addresses that go inactive after the verification date ✗ Inbox placement (depends on sender reputation)
Gamalogic is transparent about guarantee scope the same standard we hold competitors to on our comparison pages.
  • Catch-all domains. These are flagged as “Risky,” not resolved to a definitive Valid/Invalid status, because the receiving mail server itself accepts all addresses regardless of whether the mailbox exists. Read more about how we handle this on our catch-all email validation page.
  • Addresses that go inactive after verification. We verify the state of an address at the moment of the check. An address confirmed valid today can be closed or abandoned weeks later no verification service can predict future account status.
  • Inbox placement. Gamalogic confirms that an address can technically receive mail. We don’t verify whether your specific message lands in the inbox versus spam that depends on your sender reputation, content, and sending practices, not the validity of the recipient address.

Why this matters

Being specific about what verification can and can’t guarantee is, in our view, more useful to you than a bigger-sounding number with no explanation behind it. If you’re comparing providers, ask each one the same three questions we’ve answered here: how do you verify, what does your guarantee actually cover, and what’s explicitly excluded. See real outcomes from teams using this approach in our case studies.

Frequently asked questions

Does Gamalogic guarantee 100% accuracy?

No provider can guarantee 100% accuracy, because email account status can change after verification and catch-all domains cannot be individually resolved. Gamalogic guarantees 99.6% accuracy on addresses marked Valid, based on the methodology above.

Does Gamalogic verify catch-all addresses?

Gamalogic detects and flags catch-all domains as “Risky” rather than resolving individual addresses within them, since the mail server itself accepts all addresses regardless of validity. See our catch-all validation page for detail.

What happens if a Valid address still bounces?

Does verification guarantee my email will reach the inbox?

No. Verification confirms an address can technically receive mail. Inbox placement depends on sender reputation, email content, and sending infrastructure not address validity alone.

© 2026 Gamalogic All rights reserved.
Privacy Policy | Terms & Conditions