Mailbeam vs MillionVerifier
An honest comparison of features, pricing, and performance — updated January 2025.
TL;DR — Which should you choose?
Choose Mailbeam if:
- You need AI quality scoring and explainable catch-all detection
- You need official SDKs and modern developer tooling
- You need real-time API performance under 100ms
Choose MillionVerifier if:
- Your sole requirement is the cheapest possible bulk list cleaning
- You don't need an API integration — just CSV uploads
Feature-by-feature comparison
| Feature | Mailbeam | MillionVerifier |
|---|---|---|
| Pricing | ||
| Free tier | ||
| Pricing model | Subscription | Pay-as-you-go credits |
| Price at 50K/month | €49 | ~€35 (bulk rate) |
| Monthly subscription | ||
| Verification checks | ||
| SMTP probing | ||
| Disposable detection | ||
| AI quality scoring | ||
| Explainable reason field | ||
| Catch-all accuracy | High (AI) | Basic |
| API & developer | ||
| Real-time API < 100ms | ||
| Official SDKs | 6 languages | |
| Modern documentation | ||
| TypeScript support | ||
| Test mode | ||
| Compliance | ||
| EU data residency | ||
| GDPR compliant | ||
| DPA available | ||
Pricing comparison at every volume
| Monthly volume | Mailbeam | MillionVerifier | Saving |
|---|---|---|---|
| 1K / month | €0(Free) | ~€3 | 100% less |
| 10K / month | €19(Starter) | ~€18 | ~same |
| 50K / month | €49(Growth) | ~€35 | Similar |
| 200K / month | €149(Pro) | ~€99 | Less |
| 1M / month | €499(Scale) | ~€299 | Less |
MillionVerifier prices are approximate based on public information as of January 2025. Actual prices may vary.
Feature analysis
Price vs quality trade-off
MillionVerifier winsMillionVerifier is cheaper at high volumes. If your sole metric is cost-per-verification and you don't need AI scoring, real-time API, or developer SDKs, MillionVerifier delivers basic verification at a lower price point. This is the one scenario where MillionVerifier wins over Mailbeam outright.
AI scoring and accuracy
Mailbeam winsMillionVerifier's verification is binary: deliverable or not. Mailbeam adds an AI quality score (0–100) with an explainable reason field. For catch-all domains — notoriously hard to verify — MillionVerifier returns a generic flag while Mailbeam's model produces a confidence score based on domain reputation and behavioral signals. For products where false positives cost you real users, the difference in catch-all accuracy is meaningful.
Developer experience
Mailbeam winsMillionVerifier has no official SDKs, no TypeScript definitions, and documentation that reflects a primarily marketer-focused audience. Mailbeam ships with 6 official SDKs, OpenAPI specification, and documentation written for developers integrating into production applications. The difference is months of integration headaches vs an afternoon.
Real-time API
Mailbeam winsMillionVerifier's product is designed around bulk CSV upload. While an API exists, it's not optimized for sub-100ms real-time responses. Mailbeam's architecture — with pre-warmed MX caches and parallel check execution — consistently hits under 100ms for real-time signup use cases.
Switching from MillionVerifier to Mailbeam
Most migrations take under an hour. Here's the key code change:
// Before — MillionVerifier
// MillionVerifier (old)
const res = await fetch(
`https://api.millionverifier.com/api/v3/?api=${apiKey}&email=${email}`
);
const { result } = await res.json();
if (result !== "ok") return 422;
// After — Mailbeam
// Mailbeam (new)
const mb = new Mailbeam({ apiKey: process.env.MAILBEAM_KEY });
const { valid, score } = await mb.verify(email);
if (!valid || score < 60) return 422;Read the full migration guide: Migrating from MillionVerifier →
“We switched from MillionVerifier because we needed real GDPR compliance for our EU users, not just a checkbox. Mailbeam's Frankfurt hosting and DPA made the compliance conversation easy.”
Frequently asked questions
Start verifying emails — for free
1,000 free verifications per month. No credit card required. Switch from MillionVerifier in under an hour.