Real-time SMTP + MX Verification

Free Email Verification
That Actually Works

Verify single emails instantly, validate bulk CSV lists, and find professional email addresses. Keep your bounce rate low and your sender reputation clean.

100 free verifications/month  ·  No credit card required  ·  Results in seconds

Try It Right Now — Free

No signup needed. Enter any email and see results instantly.

5 free checks/day without signup. Sign up for 100/month.

Everything You Need for Clean Email Lists

BounceGuard verifies at the mailbox level — not just syntax.

MX Record Check

Verify the domain has valid mail exchange records.

SMTP Verification

Confirm the mailbox exists on the mail server in real-time.

Spam Trap Detection

Identify and filter known spam traps to protect your sender score.

Catch-All Detection

Flag domains that accept all email — reduces risky sends.

Bulk CSV Validation

Upload your list and download clean results instantly.

Email Finder

Find professional email addresses using name + company domain.

REST API

Integrate email verification directly into your app or workflow.

Email Extractor

Paste any text and extract all email addresses — free.

Syntax Validation

RFC-compliant format checking catches malformed addresses instantly.

How BounceGuard Works

Three steps to a clean, deliverable email list.

1

Upload or Enter Emails

Verify a single email instantly or upload a CSV with thousands of addresses.

2

We Verify in Real-Time

Our engine checks MX records, connects via SMTP, and detects spam traps automatically.

3

Download Clean Results

Get a detailed report: Valid, Invalid, Catch-all, and Domain Issue — ready to use.

Get Started Free

Our Email Verification Services

From single checks to bulk validation at scale.

Single Email Verification

Instantly check any email with full SMTP + MX validation.

Bulk Email Validation

Process entire email lists via CSV — results downloadable in minutes.

Email Finder

Discover verified professional emails using name and domain.

Email Extractor

Extract all emails from any pasted text — completely free.

API Integration

Verify emails programmatically in your own application.

Usage Dashboard

Track validations, credits used, and download history.

What Our Users Say

Verified reviews from real users

★★★★★

"Service is great, assistance and support is top notch."

Mistress Lisa · United States

✓ Trustpilot Jan 2026
★★★★★

"Finally a bulk email validator that actually works. Cleaned 50k emails in minutes, way better than what I was using before."

Product Hunt User

▲ Product Hunt 2026
★★★★★

"The email finder is really accurate. Got professional emails for my outreach list with almost no bounces. Highly recommend."

Product Hunt User

▲ Product Hunt 2026

Replace placeholder reviews with real Product Hunt reviews when collected.

Simple, Transparent Pricing

Pay only for what you use. Credits never expire.

5,000

verifications

$6

10,000

verifications

$12

50,000

verifications

$40

100,000

verifications

$70

200,000

verifications

$125

Larger volumes up to 10M available. See full pricing →

Start Free — 100 Verifications Included

Frequently Asked Questions

Everything you need to know about email verification.

What is BounceGuard?

BounceGuard is a free online email verification tool. It checks whether an email address is valid and deliverable using real-time SMTP connections and MX record lookups — without sending an actual email.

How does email verification work?

We check three things: (1) Syntax — is the format valid? (2) MX Records — does the domain have mail servers? (3) SMTP — does the mailbox actually exist? This combination gives accurate results without guessing.

Is BounceGuard free to use?

Yes. Every account gets 100 free email verifications per month — no credit card required. You can also verify emails directly on this page without creating an account.

Can I validate a bulk email list?

Absolutely. Upload a CSV file with an "Email" column and BounceGuard validates all addresses in the background. Results download as a CSV labeled: Valid, Invalid, Catch-all, or Domain Issue.

What is a catch-all email domain?

A catch-all domain accepts emails sent to any address at that domain — even invalid ones. BounceGuard flags these so you can decide whether to include them in your campaigns.

Does BounceGuard have an API?

Yes. BounceGuard offers a REST API for integrating email verification into your application. Generate an API key from your dashboard and make simple POST requests. Full documentation: bounceguard.net/api-docs

Start Verifying Emails for Free Today

No credit card required. 100 free verifications every month.

Create Free Account