Mailbeam vs Bouncer
An honest comparison of features, pricing, and performance — updated August 2026.
TL;DR — Which should you choose?
Choose Mailbeam if:
- You're a developer integrating real-time verification into a product (not cleaning lists)
- You want a REST API designed for developers, simple enough that no SDK is required
- You want subscription pricing without credits
Choose Bouncer if:
- Your primary use case is bulk list cleaning for email marketing campaigns
- You heavily use Bouncer's ESP integrations (Mailchimp, GetResponse)
Why developers look for Bouncer alternatives
Bouncer is an EU-based (Poland) email verification service. It's GDPR-compliant and EU-hosted, making it our closest geographic competitor. However, its product is designed primarily for email marketers, not developers integrating real-time verification.. 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 free tier — you need to start a paid trial to test the API
- 3Product designed for marketers, not developers — documentation and UX reflect this
- 4No scored verdict — catch-all emails require a manual policy decision
- 5No TypeScript definitions for API responses
What Mailbeam does differently
Mailbeam is a developer-first EU email verification API. This is what changes for teams leaving Bouncer:
- REST API today; typed SDKs for 6 languages on the roadmap
- Free tier with 1,000 verifications/month — no credit card required
- Quality scoring with explainable reason codes
- Real-time API purpose-built for signup flows
- Transparent per-verification pricing with a subscription model
Feature-by-feature comparison
| Feature | Mailbeam | Bouncer |
|---|---|---|
| Pricing | ||
| Free tier | 1,000/mo | No |
| Free tier size | 1,000/month | Trial credits only |
| Pricing model | Per-verification | Credits |
| Monthly subscription | Yes | Yes |
| Price at 50K/month | €49 | ~€149 |
| Price at 1M/month | €499 | ~€999 |
| Verification checks | ||
| Syntax validation | Yes | Yes |
| MX records | Yes | Yes |
| SMTP probing | Yes | Yes |
| Disposable detection | 50,000+ domains | Yes |
| Role-based detection | Yes | Yes |
| Catch-all detection | Yes | Yes |
| Quality score (0–100) | 0–100 | No |
| Explainable reason field | Yes | No |
| Typo suggestions | Yes | No |
| API & platform | ||
| Real-time single-address API | Yes | Partial |
| P95 response time | not published yet | ~150ms |
| Official SDKs | Roadmap | No |
| Webhooks | Yes | Yes |
| Batch verification | Yes | Yes |
| Test / sandbox mode | Yes | Partial |
| OpenAPI spec | Yes | No |
| Compliance & security | ||
| EU data residency | Frankfurt (EU) | Yes |
| GDPR compliant | Yes | Yes |
| DPA available | Yes | Yes |
| Server location | Frankfurt, DE | Warsaw, PL |
| Developer experience | ||
| Developer-first product | Yes | No |
| TypeScript support | Yes | No |
| Documentation quality | Excellent | Good |
| Error codes (machine-readable) | Yes | Partial |
| Support | ||
| Email support | yes (Starter+) | Yes |
| Priority support | yes (Growth+) | yes (paid) |
| Uptime SLA | Roadmap | no public SLA |
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 | Bouncer | Saving |
|---|---|---|---|
| 1K / month | €0(Free) | ~€10 | 100% less |
| 10K / month | €19(Starter) | ~€50 | 62% less |
| 50K / month | €49(Growth) | ~€149 | 67% less |
| 200K / month | €149(Pro) | ~€349 | 57% less |
| 1M / month | €499(Scale) | ~€999 | 50% less |
Bouncer prices are approximate based on public information as of August 2026. Actual prices may vary.
Feature analysis
Developer experience
Mailbeam winsBouncer is built for email marketers — its dashboard, workflows, and documentation assume you're cleaning a list, not integrating an API. Mailbeam is API-first: machine-readable reason codes so your application can respond differently to 'disposable domain' and 'SMTP rejected', a test mode for CI, and a documented response schema. Official typed SDKs are on the roadmap; neither product has them today.
Real-time API speed
Mailbeam winsBouncer's API is designed for bulk jobs rather than for a user waiting on a form. Mailbeam pre-warms MX record caches for common EU domains so repeat lookups stay fast: roughly 80ms when the answer is cached or DNS-only, under a second when a full SMTP probe is needed. We publish the measured figures instead of a headline number.
EU compliance
TieBoth Mailbeam and Bouncer are EU-hosted and GDPR-compliant. Bouncer processes data in Warsaw, Poland; Mailbeam in Frankfurt, Germany. Both provide DPAs. For most European companies, either product satisfies GDPR data residency requirements. Mailbeam's DPA is automatically presented during onboarding on Scale+ plans; Bouncer requires you to request one.
Catch-all scoring you can read
Mailbeam winsBouncer detects catch-all domains and flags them as such. Mailbeam scores them: the probe tests a random address on the same domain in the same connection, and when that is accepted too the verdict becomes catch_all_unverifiable with a capped score. You get a number to threshold on and a reason you can show, instead of a blanket policy.
Free tier and self-serve
Mailbeam winsMailbeam offers a free tier of 1,000 verifications per month — no credit card required. Bouncer requires you to start a paid trial to access the API. For developers evaluating options, the ability to integrate and test without a credit card is a meaningful difference.
Switching from Bouncer to Mailbeam
Most migrations take under an hour. Here's the key code change:
// Before — Bouncer
// Bouncer (old)
const res = await fetch("https://api.usebouncer.com/v1/email/verify", {
method: "POST",
headers: { "x-api-key": apiKey, "Content-Type": "application/json" },
body: JSON.stringify({ email }),
});
const { status } = await res.json();
if (status !== "deliverable") 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 Bouncer →
“We switched from Bouncer 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
Are both Mailbeam and Bouncer GDPR compliant?
Yes. Both are EU-based and process data within the EU. Bouncer processes data in Poland; Mailbeam in Germany. Both provide DPAs. For most GDPR use cases, either satisfies EU data residency requirements.
Does Mailbeam have the same accuracy as Bouncer?
Both products use SMTP probing as the core validation mechanism. For catch-all addresses, Mailbeam returns a score and an explicit catch_all_unverifiable reason rather than a binary flag, so you decide the threshold. We publish our measured accuracy in docs/accuracy.md rather than claiming a win over a competitor we have not benchmarked.
Bouncer has no SDKs — is the Mailbeam API similar enough to wrap manually?
Yes — and for now it is the only way, since our official SDKs are still on the roadmap. Mailbeam's API is a single POST request with a JSON body, and the docs carry copyable examples with retry and timeout handling in five languages.
Does Mailbeam integrate with Mailchimp like Bouncer does?
Mailbeam is a developer API and does not currently offer native Mailchimp or GetResponse integrations. If your team relies on these dashboard-level integrations, Bouncer's marketer-focused product may be a better fit for that specific workflow.
Start verifying emails — for free
1,000 free verifications per month. No credit card required. Switch from Bouncer in under an hour.