Pricing
Start free, pay for what you verify
Every plan includes disposable detection, MX/SMTP checks, and API access. No hidden per-seat fees.
Free
Explore OpenGuardian, no card required.
1,000 verifications
- ✓ Real-time single-check API
- ✓ Disposable + MX/SMTP checks
- ✓ Community support
- ✓ 7-day trial
Starter
For indie devs and small apps.
10,000 verifications/mo
- ✓ Bulk list upload
- ✓ Disposable + MX/SMTP checks
- ✓ Email support
Growth
For growing signup funnels.
100,000 verifications/mo
- ✓ Real-time webhook
- ✓ Spam-trap risk scoring
- ✓ Zapier/Segment integrations
- ✓ Priority support
Scale
For high-volume senders.
1,000,000 verifications/mo
- ✓ Dedicated IP allowlisting
- ✓ Advanced analytics
- ✓ SLA-backed uptime
- ✓ Dedicated support
Enterprise
For platforms verifying at massive scale.
Custom pricing
- ✓ Private deployment option
- ✓ Custom disposable-domain rules
- ✓ SSO/RBAC
- ✓ Audit logs
- ✓ Dedicated account manager
Frequently asked questions
What counts as a "disposable" or "temp" email?+
Addresses from services designed to be thrown away after one use — Mailinator, Guerrilla Mail, 10-minute-mail, and thousands of look-alike domains. OpenGuardian's disposable-domain list updates daily as new services appear.
Do you actually send a test email to verify an address?+
No. The SMTP check opens a connection to the receiving mail server and asks if the mailbox exists, without delivering a message — so the recipient never sees anything and your sender reputation isn't affected.
What's the difference between "risky" and "invalid"?+
Invalid means the address is malformed or the domain doesn't accept mail at all. Risky covers catch-all domains (which accept everything, so we can't confirm the specific mailbox), role-based addresses, and known spam-trap patterns.
Can I verify emails in real time at signup, not just in bulk?+
Yes — the real-time API/webhook returns a verdict in under 300ms, fast enough to gate a signup form before submission completes.
Will this slow down my signup form?+
No — the real-time check runs asynchronously against the same request cycle and returns well within a normal form-submit round trip; most integrations feel instant to the end user.
Is there a free plan?+
Yes — 1,000 free verifications with no card required, enough to test real signup traffic before committing.
Is OpenGuardian suitable for enterprise-scale sending?+
Yes — enterprise plans include private deployment, custom disposable-domain rules, SSO/RBAC, and dedicated support for teams verifying at very high volume.
Stop guessing which emails are real.
Run your first 1,000 verifications free — no card required.