Mailbeam
Mailbeam is a real-time email verification API for developers who want to check addresses in signup flows.
What Mailbeam is
Mailbeam is a real-time email verification API for developers who want to check addresses in signup flows. It runs eight checks, covering syntax, MX records, SMTP existence, disposable and role-based addresses, free providers, catch-all detection, and explainable scoring. Each result includes a quality score from 0 to 100 and a machine-readable reason. The HTTP API can be called without installing an SDK, and the homepage has examples for Node.js, Python, PHP, Ruby, and Go. Mailbeam says cached and DNS-only lookups take roughly 80ms from EU regions, while a full SMTP probe takes under one second. Its API servers, databases, and processing are in the EU, with data centers in Germany. Real-time addresses are discarded immediately; batch lists and results are retained for 72 hours before automatic deletion. Monthly quotas do not roll over.
Good
- Eight checks include disposable and catch-all detection.
- Results include a score and machine-readable reason.
- API examples cover five programming languages.
- Real-time addresses are discarded immediately.
- Bulk CSV upload and batch API are available.
Watch out
- Free requests above 1,000 monthly return a 429 error.
- Monthly verification quotas do not roll over.
- SOC 2 Type II is in progress.
Who it suits
Mailbeam suits developers and teams that need email checks in signup flows or batch uploads, particularly those seeking an API with EU data residency. It offers plans for solo developers through enterprise teams.
Verdict
Mailbeam combines real-time and batch email verification with scoring and developer-facing API examples. Consider its monthly quota limits and plan pricing when choosing an allowance.
Plans and prices
From Mailbeam's own pricing page, checked 7 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | 1,000 verifications/month · REST API · Bulk CSV upload + batch API · Webhooks · Community support · €0/mo |
| Starter | €19 a month | 10,000 verifications/month · SMTP probing · Typo suggestions · Email support · €19/mo |
| Growth | €49 a month | 50,000 verifications/month · Async batch endpoint · Priority email support · Catch-all confidence scoring · €49/mo |
| Pro | €149 a month | 200,000 verifications/month · 12h support response time · Dedicated IP pool · Some features marked Roadmap · €149/mo |
| Scale | €499 a month | 1,000,000 verifications/month · 4h support response time · Some features marked Roadmap · €499/mo |
| Pay-as-you-go | — | No monthly minimum · Volume tiers apply automatically · €0.008 per verification up to 10K monthly volume; €0.005 at 10K–100K; €0.002 at 100K–1M; custom above 1M |
| Enterprise | Priced on request | 10M+ verifications/month · On-premise deployment option · Custom SLA · 1h support response time · Custom |
The facts
Each one read from Mailbeam's own pages, with the date it was checked.
What it does
- Compliance
- The security page lists GDPR compliance and active EU data residency, while SOC 2 Type II is in progress.checked 7 Oct 2026
- Data residency
- Mailbeam says its API servers, databases, and processing run within the EU, using Hetzner data centers in Germany.checked 7 Oct 2026
- Data retention
- Real-time verification email addresses are discarded immediately; batch lists and results are retained for 72 hours for download, then deleted automatically.checked 7 Oct 2026
- Encryption
- The security page states that API traffic uses TLS 1.3 with TLS 1.2 minimum, databases use AES-256 encryption, API keys are hashed with bcrypt, and passwords with Argon2id.checked 7 Oct 2026
- Integrations
- The homepage provides integration examples for Node.js, Python, PHP, Ruby, and Go, and says no SDK needs to be installed to call its HTTP API.checked 7 Oct 2026
- Latency
- Mailbeam says cached and DNS-only lookups resolve in roughly 80ms from EU regions and a full SMTP probe stays under one second.checked 7 Oct 2026
- Purpose
- Mailbeam provides a real-time email verification API for developers to use in signup flows.checked 7 Oct 2026
- Quota limits
- Monthly verification quotas do not roll over; Free requests above 1,000 return a 429 error, and paid-plan overages are billed at the plan's overage rate.checked 7 Oct 2026
- Scoring
- The API returns a 0–100 quality score and a machine-readable reason for its verdict.checked 7 Oct 2026
- Support
- The pricing page lists community support on Free, email support on Starter, priority email support on Growth, and response-time targets for higher plans.checked 7 Oct 2026
- Verification checks
- The API runs eight checks, including syntax, MX records, SMTP existence, disposable and role-based addresses, free providers, catch-all detection, and explainable scoring.checked 7 Oct 2026
- Who it serves
- Mailbeam says it is built by Spain-based software studio Sopa Lab for European developers and teams, from solo founders to enterprise teams.checked 7 Oct 2026
The company
- Headquarters
- Spainchecked 28 Sep 2026
Alternatives to Mailbeam
- 1
ZeroBounce
Free planAndroidiOSWebAPI8.1Free plan - 2
MailboxValidator
Free planWebAPI6.8Free plan - 3
Emailable
Free planWebAPI6.7From $32.30 a month - 4
EmailValidator
Free planWebAPI6.7Free plan - 5
QuickEmailVerification
Free planWebAPI6.7Free plan - 6
Reoon Email Verifier
Free planWebAPI6.7From $9 a month