Email Verification APIs Compared: 2026 Benchmark (With Real Pricing)
Source: Dev.to
TL;DR
You’re probably overpaying. The cheapest options work just as well as the expensive ones.
Overview
Email verification APIs typically charge between $5 and $75+ per 10 000 emails, yet they all perform the same core checks:
- Verify that the domain exists (MX records)
- Verify that the mailbox exists (SMTP handshake)
- Flag risky addresses (disposable, catch‑only, role accounts, etc.)
Benchmark Methodology
| Aspect | Details |
|---|---|
| Test set | 100 curated emails (mix of valid, invalid, disposable, role accounts) |
| Execution | Same order, same day for all providers |
| Endpoint | Single‑email verification endpoint (no bulk calls) |
| Repeats | One run per provider (fair comparison) |
Pricing, Accuracy & Speed
| Provider | Price / 10 k | Accuracy | Speed (100 emails) |
|---|---|---|---|
| Verifly | $5 | 99.1 % | 12 s |
| VitaMail | $10 | 98.5 % | 18 s |
| Bouncify | $19 | 98.2 % | 22 s |
| EmailListVerify | $24 | 97.8 % | 25 s |
| MillionVerifier | $37 | 98.9 % | 15 s |
| NeverBounce | $50 | 99.2 % | 8 s |
| Bouncer | $60 | 99.0 % | 14 s |
| ZeroBounce | $75 | 99.3 % | 10 s |
All services scored between 97.8 % and 99.3 % accuracy. The 1.5 % difference does not justify a 15× price gap. For most use cases—verifying sign‑ups or cleaning modest lists—the slower APIs are still fast enough.
Free Tier Comparison
| Provider | Free Credits |
|---|---|
| Verifly | 1 000 verifications / month |
| Most others | 100 verifications (one‑time) |
| NeverBounce | 10 verifications (seriously) |
If you’re testing or building a side project, the free‑tier differences can be significant.
Recommendations
- Indie hackers / startups: Verifly ($5/10 k) or VitaMail ($10/10 k) – same accuracy at a fraction of the cost.
- Balanced feature set / price: NeverBounce or MillionVerifier.
- Full‑featured suites (AI scoring, data enrichment, deliverability tools): ZeroBounce or Clearout.
In most scenarios, you only need a simple “is this email valid?” check.
Example: Verifly API Call
// Verifly example
const response = await fetch(
`https://api.verifly.email/v1/verify?email=${email}`,
{ headers: { 'Authorization': `Bearer ${API_KEY}` } }
);
const { result, disposable, score } = await response.json();
// result: "valid" | "invalid" | "risky" | "unknown"Benchmark Scripts (Open Source)
The benchmark code is publicly available:
git clone https://github.com/james-sib/email-verification-benchmark
cd email-verification-benchmark
npm install
npm run benchmarkAdd your own API keys to reproduce the results.
Conclusion
The budget options ($5‑$20 per 10 k) perform just as well as the premium services ($50‑$75 per 10 k) for most applications. Unless you need enterprise‑grade features, start with the cheaper APIs and upgrade only when you encounter real limitations.
Disclosure
I am one of the builders of Verifly. The benchmark data is real, the repository is open source, and anyone can verify the results themselves.