Email verification built for European developers

• < 100ms p95

  Real-time API

  Verify in under 100ms. Built for signup flows, not weekend list cleaning. Our edge network pre-warms common domain MX caches.

  await mb.verify("user@example.com")
  // resolves in 82ms

• GDPR Art. 28

  GDPR-first

  EU-hosted in Frankfurt. DPA signed by default. Zero data crosses to the US. Full data flow documented on our Security page.

  // Data stays in EU — always
  // DPA included in every plan

• Explainable AI

  AI scoring with reasons

  Get a score AND the reason. Never wonder why an email was flagged risky. Use the reason field to show users a helpful error.

  { score: 12, reason: "disposable_domain" }

• No tricks

  Transparent pricing

  Pay per verification. No credits. No multipliers. No bundles that expire. Your bill is exactly what you'd calculate in a spreadsheet.

  // 10,000 verifications × €0.001
  // = €10.00 — always

Hover any check to learn exactly what it validates.

// middleware/verifyEmail.js
import Mailbeam from "@mailbeam/sdk";

const mb = new Mailbeam({ apiKey: process.env.MAILBEAM_KEY });

export async function verifyEmail(req, res, next) {
  const { email } = req.body;
  const { valid, score, reason } = await mb.verify(email);

  if (!valid || score < 60) {
    return res.status(422).json({ error: reason ?? "Invalid email." });
  }
  next();
}

// routes/auth.js
app.post("/api/signup", verifyEmail, createUser);

SDKs for Node, Python, PHP, Ruby, Go, and a plain HTTP API. View full docs →