Real-Time Email Validation API

Eliminate invalid, disposable, spam-traps or catch-all emails before they impact your campaigns. Reduce bounce rates, improve email deliverability, and prevent fake signups with our free email checker.

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join 100+ developers and businesses worldwide

How it works

See NoParam in action

Why choose NoParam?

Stop Bounces. Improve Deliverability. Protect Your Reputation.

Real-time email verification

Our email verification service instantly detects fake, mistyped, temporary or role-based emails while verifying syntax, domain, MX records and mailbox validity.

{
  "email": "contact@noparam.com",
  "validations": {
    "syntax": true,
    "domain_exists": true,
    "mx_records": true,
    "mailbox_exists": true,
    "is_disposable": false,
    "is_role_based": true
  },
  "score": 90,
  "status": "VALID"
}

Privacy-first email validation

We never store your data. NoParam is fully GDPR, CCPA, and PIPEDA compliant for complete data protection.

Blazing-fast performance

Validate emails in under 300ms without slowing down your apps or workflows.

Body

Cookies

Headers

{ "email": "contact@noparam.com" }
200 OK
35ms
437 B

Easy API integration

Connect with your existing email marketing tools, CRMs, and automation platforms in minutes.

noparam.js
1await fetch("https://noparam.com/api/v1/validate", {
2  method: "POST",
3  headers: {
4    Authorization: "Bearer YOUR_API_KEY",
5  },
6  body: JSON.stringify({
7    email: "contact@noparam.com",
8  }),
9});
Real-world experiences

What customers are saying

I've tried multiple email validation services, but this one stands out. The accuracy is top-notch, and the API is super easy to work with. It's now an essential part of our onboarding process!

Michael L.

SaaS Founder

As a marketer, keeping our email lists clean is crucial. This API has been a game-changer! It's incredibly fast, integrates seamlessly, and has saved us from countless bounces.

Sarah T.

Email Marketing Specialist

Start for free today

Frequently asked questions

Our API is designed to provide highly accurate email verification by detecting disposable, fake, and invalid addresses in real-time. Customers have seen a significant reduction in bounced emails and improved deliverability rates.

Still have questions?

Our support team is always happy to help. Reach out anytime, and we'll get back to you as quickly as possible!

Integrate with your favorite tools

Get email validation inside your marketing and CRM platforms

Our Mailchimp integration is available now, allowing you to validate contacts directly within your email lists. More integrations, including HubSpot and Brevo, are coming soon to help you maintain a clean, high-quality email database with ease.

Now Available on WordPress

Direct WordPress Integration

Validate emails directly in your WordPress forms with our official plugin. Prevent fake signups and maintain a clean subscriber list without leaving your dashboard.

Real-Time Validation

Instant email checks in contact forms, registration pages, and post comments.

Spam Protection

Block disposable emails and invalid emails before they reach your database.

Custom Error Messages

Customize error messages that users see when they enter invalid emails – explain whether it's a typo, temporary address, or unsupported provider.

Get the Free Plugin

WordPress Plugin

Protected Areas

Toggle individual validations

Contact Form 7

Block invalid emails in CF7 forms

WP Forms

Block invalid emails in WPForms forms

User Registration

Prevent fake signups

Comments Section

Verify comment author emails

Custom Error Messages

Customize email validation feedback for your users

Bulk Email Verification

Clean your entire email list in minutes

Upload your marketing list as a CSV or Excel file. NoParam verifies every address and gives you a clean, enriched file ready to import into your email platform.

  • Supports CSV and Excel (.xlsx / .xls) files
  • Auto-detects email column, no manual mapping
  • Preserves all your original columns & data
  • Download results as Excel or CSV
  • Up to 25,000 emails per file on Pro plan. Contact us for more.
Try bulk verification freeNo credit card required
Step 1

Upload your list

Drag & drop or select your CSV or Excel file (.xlsx, .xls). We auto-detect comma or semicolon delimiters.

Step 2

We verify every email

Syntax, domain, MX records, disposable & role-based checks are run in parallel across your entire list.

Step 3

Download clean results

Export your results as a native Excel spreadsheet or CSV, with verification columns appended alongside your original data.

Accepted formats:.csv.xlsx.xls
Start validating emails instantlyStart validating emails instantlyStart validating emails instantlyStart validating emails instantlyStart validating emails instantlyStart validating emails instantlyStart validating emails instantlyStart validating emails instantlyStart validating emails instantlyStart validating emails instantly
Real-Time Email Validation API | Free Email Checker - NoParam