Simple, honest pricing.
Every plan ships the full SF Email Verifier engine — eight signal checks, API access, bulk CSV, and webhooks. No paywalled accuracy, no surprise overage fees.
How many emails do you verify a month?
Compare every feature
Same engine. Same accuracy. The difference is volume and support.
| Feature | Starter | Growth | Business |
|---|---|---|---|
| Emails per month | 5,000 | 25,000 | 100,000 |
| Price (USD) | $9.99 | $29 | $79 |
| Cost per email | $0.002 | $0.0012 | $0.0008 |
| Real-time SMTP verification | |||
| Bulk CSV upload | |||
| REST API access | |||
| Rate limit (req/min) | 60 | 300 | 1,200 |
| Outbound webhooks | |||
| Dedicated sending IP | |||
| Team seats | 1 | 1 | 5 |
| Support | Community + email | Priority email (24h) | Chat + email (4h SLA) |
Frequently asked questions about pricing
Is the free plan really free?+
Yes — permanently free. Sign up with email and you get 20 verification credits every day, forever. No card, no countdown, no auto-upgrade. The 20 credits refresh at your local midnight; upgrade only if you need more volume.
How do monthly plans work?+
Pick a plan, pay once a month. On every billing date, your allowance refreshes — Starter gets 5,000 emails, Growth 25,000, Business 100,000. Unused emails don't roll over to next month.
Can I switch plans anytime?+
Yes. Upgrades take effect immediately and we prorate the remaining time on your current plan. Downgrades take effect at the next billing date so you don't lose what you've already paid for.
What counts as a verification?+
Every email address that returns a definitive result (valid, invalid, catch-all, disposable, role) counts as one. 'Unknown' results — where the recipient server refuses to confirm or deny — are never billed.
Do you offer refunds?+
Yes. If SF Email Verifier doesn't work for you in the first 14 days, write to support and we'll refund the unused portion of your subscription, no questions asked.
Is the API included on the free plan?+
Yes. Every plan, including the free 20-a-day tier, includes full API access — no separate developer fee, no rate-limited sandbox. You can integrate SF Email Verifier into your signup flow on day one.
Do you have enterprise / volume discounts?+
For monthly volumes above 500,000 emails or annual commitments, we offer custom pricing, dedicated IPs, EU data residency, and a signed DPA. Reach out via the contact page and we'll get back within one business day.
Try SF Email Verifier free — every day
20 free credits every day, forever. No credit card. Cancel any plan in one click.