How does the email verification process work?

Each address runs through a multi-stage pipeline: syntax validation (RFC 5322), domain and MX record lookups, and a real-time SMTP handshake that asks the receiving server whether a mailbox exists — plus disposable, role-based, and catch-all detection. See our Features page for the full breakdown.

How accurate is the email verifier?

BounceCheck is one of the fastest and most accurate email checkers available. Our engine catches the vast majority of invalid, disposable, role-based, and risky addresses so you can send with confidence. Accuracy ultimately depends on the quality of your source list.

Does the email verifier return real-time results?

Yes. The verifier returns real-time results for every address you check. Unlike platforms that rely on long-term caching, BounceCheck keeps caches short-lived to ensure the most accurate, up-to-date verification — and each result comes with a confidence score from 0 to 100.

Is the email verifier free?

The email verifier is free to try — the Free plan includes 50 verifications per month with no credit card required. Need more? Purchase credits or subscribe for a discount. For full details, visit our pricing page.

What information does the email verifier provide?

Each result is categorized as Valid, Invalid, Risky, Catch-all, Disposable, or Unknown, and flags key attributes determined during verification: disposable or temporary addresses, accept-all / catch-all domains, role-based addresses (info@, support@), full mailboxes, and no-reply addresses. You can filter and export each category separately.

Does the email verifier send emails?

No. Rest assured, BounceCheck never sends an actual email to determine the validity of an address. We verify mailboxes through a stealth SMTP handshake, so the end recipient is never notified.

Can it detect catch-all and disposable emails?

Yes. Our engine identifies catch-all domains that accept any address, disposable providers like Mailinator and 10minutemail, role-based addresses, and known spam traps. You can also try our free Disposable Email Checker to test a single address.

Do you offer an email verification API for developers?

Yes. Our REST API lets you verify any email with a single HTTPS request, using bearer-token authentication and webhooks for async flows. Use it in any language — cURL, Python, Node.js, Ruby, Go, or PHP — and drop it into your signup form, checkout, or CRM. See the API docs to get started.

Can I integrate BounceCheck with my marketing tools?

Yes — through our REST API or no-code integrations. Connect BounceCheck to Mailchimp, HubSpot, Klaviyo, Shopify, Typeform and thousands of other apps without writing code. See our integrations page for the full list.

Is the email verifier GDPR compliant?

Yes. BounceCheck complies with GDPR and CCPA regulations, ensuring your data is handled and processed securely. All data is encrypted in transit (TLS 1.3) and at rest (AES-256), and we never sell, share, or train models on it. For more details, read our Privacy Policy.

Want to go deeper on email deliverability?

Our blog covers bounce rates, sender reputation, list hygiene, and deliverability best practices in depth. Browse the BounceCheck blog for guides, or reach out to our team — we reply personally, no bots.

§ 01 / EMAIL VERIFICATION

Email Verification Service for Cold Email and Newsletter Senders

Accurate, fast and secure email verification service. Use our free email checker to reduce bounce rates, improve deliverability, and keep your email lists clean.

Real-time results Stealth SMTP No card required

Live Status

Verification Ledger

98VALID

Syntax Check

MX Record

SMTP Server

Catch-all Verification

Disposable Detection

Role Account

Built for teams who care about clean data

§ 02 / THE PROBLEM

Email List Hygiene: Why Bad Addresses Kill Your Revenue

Spam folder

High bounce rates trigger ISP filters at Gmail and Outlook, landing even your clean emails in the spam folder.

Wasted spend

Every dead email in your ESP costs you on every send. For large lists, this leakage is a silent financial drain.

Lost conversions

Bad addresses don't open or click. Cleaning your list means your message reaches actual humans who can convert.

§ 03 / FEATURES

BounceCheck Features Built for Deliverability

Single verify, bulk upload, real-time API, integrations, analytics, and team management — all in one place.

Verify one email in real time.

Drop an address into our verifier and get a 0-100 confidence score within seconds. Our pipeline runs syntax checks, MX lookups, SMTP handshakes, catch-all detection, disposable filtering, and role-based flagging — all in parallel. Perfect for testing addresses one at a time, validating signups, or troubleshooting deliverability issues. Use it as a free email checker right from this page.

[email protected]Valid

[email protected]Risky

[email protected]Invalid

[email protected]Valid

Instant Results

Real-time response with a multi-step verification engine.

Confidence Score

Valid, Risky, or Invalid with a precise % confidence rating.

Stealth SMTP

Recipients are never notified — zero footprint on your reputation.

§ 04 / WORKFLOW

How to Validate Your Email Lists with BounceCheck

STEP 01

Upload CSV

Drag and drop your raw list. We support any format.

STEP 02

30-Step Engine

Our mathematical model runs deep diagnostics.

STEP 03

Categorize

We separate valid, catch-all, and toxic emails.

STEP 04

Export Clean

Download your pristine list and start sending.

§ 05 / FUNDAMENTALS

What is email verification?

Email verification (also called email validation or email checking) is the process of confirming that an email address exists, is properly formatted, and can actually receive mail. Done well, it protects your sender reputation, lowers your bounce rate, and keeps your messages out of the spam folder.

A modern verification engine like BounceCheck runs several checks on every address: a syntax check against RFC 5322, a domain check to confirm the domain exists and has working MX records, a stealth SMTP handshake that asks the receiving mail server if the mailbox exists — without ever sending an actual email — and additional filters for disposable, role-based, and catch-all addresses.

The result is a clean list categorized into Valid, Risky, Invalid, Catch-all, Disposable, and Role-based — letting you send confidently to addresses that will actually deliver. Whether you're a marketer cleaning a list before a campaign, a developer validating signups via API, or an agency running list hygiene for clients, email verification is the difference between landing in the inbox and getting flagged as spam.

§ 06 / USE CASES

Email Verification for Every Use Case

E-commerce

Verify customer emails at checkout to prevent failed order confirmations and shipping notifications. Connect to Shopify or WooCommerce via Zapier.

SaaS startups

Drop our REST API into your signup form to block disposable and invalid addresses before they pollute your user database. Reduce churn from fake accounts.

Agencies

Clean client email lists in bulk before every campaign send. Verify thousands of contacts overnight with the bulk uploader and detailed reports.

Marketing teams

Run quarterly list hygiene through the dashboard. Protect your sender reputation, lower bounce rates, and keep your Mailchimp or Klaviyo lists pristine.

Need something custom? Talk to our team.

§ 07 / SAVINGS

See what a clean list saves you.

Estimated savings based on ESP costs, deliverability improvements, and recovered lead value.

List size

50,000

Industry

E-commerce

Estimated savings

~$2,300/mo

Lower bounce, better deliverability

Start free

§ 08 / PROOF

Why Teams Trust BounceCheck

“Our sender reputation jumped from 72 to 94 after one bulk clean with BounceCheck. We went from landing in spam tabs to consistently hitting primary — open rates up 31% the next send.”

Jessica Park

Head of Growth, Flowdesk

“API integration took 45 minutes flat. Every new signup gets validated in real-time before it touches our CRM. Our sales team stopped complaining about bounced outreach within a week.”

Marcus Weber

Lead Engineer, Campaignly

“We switched from ZeroBounce last year. BounceCheck catches more catch-alls and the bulk jobs run 3× faster. The accuracy difference on role-based addresses alone justified the move.”

Aisha Okafor

Email Deliverability Lead, Konnect Agency

§ 09 / PRICING

Pay only for what you verify.

No subscription tricks. Credits never expire. Cancel any time.

Free

For trying us out

$0/month

50 emails/month

Basic API access
Standard delivery
Community support

Get Started

Popular

Starter

For growing teams

$9.99/month

5,000 emails/month

Full API access
Advanced validation
Priority support
Detailed analytics

Get Started

Pro

For serious senders

$29.99/month

20,000 emails/month

Full API access
Advanced validation
Priority support
Detailed analytics
Custom integration

Get Started

Need more than 20k/month? Talk to sales or see how we compare to ZeroBounce, NeverBounce, and Kickbox.

§ 10 / FAQ

Email Verification FAQ

Everything you need to know about email verification, our API, pricing, and integrations. Still stuck? Our team replies personally — no bots.

Still need help? Contact us

Explore more

BounceCheck's email verifier is a free-to-try tool that validates whether an email address is valid, deliverable, and safe to send to. Every check returns a clear state — Valid, Risky, Invalid, or Unknown — based on a series of deliverability checks.
Looking to verify a whole list? Try our Bulk Email Verifier.

§ 11 / GET STARTED

Verify your first 50 emails free.

Start Free

Email List Hygiene: Why Bad Addresses Kill Your Revenue

Spam folder

High bounce rates trigger ISP filters at Gmail and Outlook, landing even your clean emails in the spam folder.

Wasted spend

Every dead email in your ESP costs you on every send. For large lists, this leakage is a silent financial drain.

Lost conversions

Bad addresses don't open or click. Cleaning your list means your message reaches actual humans who can convert.