FixBounce Email Verifier

FixBounce Email Verifier checks if every email address on your site actually exists — not just if it looks valid, but if the mailbox is real. Install, activate, and you’re protected immediately. No account needed.

How It Works

Every email submitted on your site (registration, comment, contact form, checkout) is verified through the FixBounce API:

1. Syntax check — Is the email properly formatted?
2. Disposable domain check — Is it a throwaway address? (350+ domains blocked)
3. MX record check — Does the domain have a mail server?
4. SMTP mailbox verification — Does the actual mailbox exist?
5. Catch-all detection — Does the domain accept any address?
6. Deliverability score — Deliverable, Risky, or Undeliverable

All 6 checks run on every verification. The only difference between plans is how many v…