Mailbeam vs MillionVerifier
An honest comparison of features, pricing, and performance — updated August 2026.
TL;DR — Which should you choose?
Choose Mailbeam if:
- You need a quality score and an explainable verdict, not a yes/no flag
- You want modern developer tooling and a test mode for CI
- You need real-time verification inside a signup flow
Choose MillionVerifier if:
- Your sole requirement is the cheapest possible bulk list cleaning
- You don't need an API integration — just CSV uploads
Why developers look for MillionVerifier alternatives
MillionVerifier is a budget-oriented email verification service based in Hungary (EU). It focuses on bulk list cleaning at low cost.. These are the pain points teams cite most often when they move away:
- 1No test or sandbox mode, so CI has to hit the paid production API
- 2No scored verdict — catch-all detection is basic and produces false positives
- 3Not designed for real-time signup verification — CSV upload focus
- 4No free tier — you need to purchase credits to start testing
- 5No modern documentation for developer integration
What Mailbeam does differently
Mailbeam is a developer-first EU email verification API. This is what changes for teams leaving MillionVerifier:
- Quality scoring with explainable reason codes
- REST API today; typed SDKs on the roadmap
- Real-time API purpose-built for signup flows
- Free tier for testing without credit card
- Modern developer documentation
Feature-by-feature comparison
| Feature | Mailbeam | MillionVerifier |
|---|---|---|
| Pricing | ||
| Free tier | 1,000/mo | No |
| Pricing model | Subscription | Pay-as-you-go credits |
| Price at 50K/month | €49 | ~€35 (bulk rate) |
| Monthly subscription | Yes | No |
| Verification checks | ||
| SMTP probing | Yes | Yes |
| Disposable detection | 50,000+ domains | Yes |
| Quality score (0–100) | 0–100 | No |
| Explainable reason field | Yes | No |
| Catch-all accuracy | High (AI) | Basic |
| API & developer | ||
| Real-time single-address API | Yes | Partial |
| Official SDKs | Roadmap | No |
| Modern documentation | Yes | No |
| TypeScript support | Yes | No |
| Test mode | Yes | No |
| Compliance | ||
| EU data residency | Frankfurt (EU) | Yes |
| GDPR compliant | Yes | Yes |
| DPA available | Yes | Partial |
Roadmap means we are building it and it is not available yet — not that it is missing from the plan.
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 August 2026. 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 scored verdicts, a real-time API or developer tooling, MillionVerifier delivers basic verification at a lower price point. This is the one scenario where MillionVerifier wins over Mailbeam outright.
Scoring and accuracy
Mailbeam winsMillionVerifier's verification is binary: deliverable or not. Mailbeam adds a 0–100 quality score and an explainable reason field. For catch-all domains — notoriously hard to verify — MillionVerifier returns a generic flag, while Mailbeam probes the domain to establish that it accepts anything and then says so explicitly, capping the score instead of implying confidence it does not have. For products where false positives cost you real users, that distinction is the whole point.
Developer experience
Mailbeam winsMillionVerifier has no official SDKs, no TypeScript definitions, and documentation that reflects a primarily marketer-focused audience. Mailbeam's docs are written for developers integrating into production applications, with copyable examples and a test mode for CI. Official SDKs and an OpenAPI spec are on the roadmap for both of us — the difference today is the quality of the reference.
Real-time API
Mailbeam winsMillionVerifier's product is designed around bulk CSV upload. While an API exists, it is not optimised for real-time responses. Mailbeam's architecture — pre-warmed MX caches and parallel check execution — is built for the latency budget of a signup form.
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 { valid, score } = await verifyEmail(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
MillionVerifier is cheaper — when should I use Mailbeam instead?
MillionVerifier wins on raw cost for high-volume bulk cleaning. Mailbeam wins when you need real-time signup integration, a scored verdict for catch-all addresses, and reason codes your application can branch on. If all you need is cheap bulk CSV cleaning, MillionVerifier is a reasonable choice. If you're building a product integration, Mailbeam is the better fit.
Is MillionVerifier EU-hosted?
Yes — MillionVerifier is based in Hungary, an EU member state. Like Mailbeam, it qualifies as an EU data processor. However, Mailbeam provides more explicit GDPR compliance documentation and DPA templates.
What is the accuracy difference between Mailbeam and MillionVerifier?
For basic addresses (deliverable, invalid), accuracy is similar. The meaningful difference is catch-all detection: Mailbeam proves the domain accepts anything and reports catch_all_unverifiable with a capped score, while MillionVerifier returns a flat flag. Knowing why a verdict is uncertain is what lets you avoid blocking real users.
Start verifying emails — for free
1,000 free verifications per month. No credit card required. Switch from MillionVerifier in under an hour.