Email Verification API for Onboarding & Fraud Prevention
Catch invalid, dummy, and mistyped email addresses in real time. Verify that an email domain actually exists and can receive messages — reduce bounce rates, block fake signups, and ensure valid contact data during onboarding.
Starts at ₹8.40 per check · excl. GSTView Pricing
Overview
The Email Verification API helps businesses catch invalid, dummy, and mistyped email addresses before they enter your system. It checks whether the email domain is real and can receive messages, and returns domain age to help assess trust — a newly created domain with no mail infrastructure is a strong fraud signal.
What Can You Verify With Email Verification API?
Key details returned across all Email Verification API endpoints, ready to power your KYC and onboarding workflows.
Domain
Domain portion of the email address (part after @). Used to anchor all domain-level checks.
Is Email Valid?
Whether the email address is valid and deliverable. true = domain has live MX records and can receive mail; false = domain has no mail server or is otherwise undeliverable.
Is Disposable Email?
Whether the email domain belongs to a known disposable / temporary email provider. true = disposable (high fraud risk); false = regular email domain.
Domain Age (Days)
Age of the email domain in days since registration. Newly created domains (< 30 days) are a strong fraud signal; legitimate email providers have domains that are years old.
MX Records
List of MX (mail exchange) hostnames discovered for the domain, ordered by priority. An empty array means the domain cannot receive email.
Email Verification API Flow – Sample Request and Response
Send simple inputs. Get rich, verified data in seconds.
Verify an email address in real time — confirm the domain has live mail infrastructure, detect disposable addresses, and retrieve domain age as a trust signal.
Key Features
Everything you need to integrate and scale
Invalid Email Detection
Catch dummy, mistyped, and non-existent email addresses by verifying the domain has real mail infrastructure.
Domain Trust Scoring
Returns domain age in days — newly created domains are a strong indicator of fraudulent or disposable email addresses.
Mail Server Validation
Checks MX (mail exchange) records to confirm the domain can actually receive emails — not just that the format is valid.
Real-Time Processing
Instant email validation for inline onboarding and registration flows.
Who Should Use This API?
Primary Use Cases
How to Integrate
Get started in minutes with our simple integration process
- 1
Sign Up
Create an account on Connect App and get your sandbox credentials.
- 2
Submit KYC
Complete your KYC verification process by submitting the required documents.
- 3
Integrate API
Use our comprehensive documentation to integrate the APIs.
- 4
Test in Sandbox
Test your integration thoroughly in our sandbox environment.
- 5
Go Live
Start verifying emails in production.
Frequently Asked Questions
What input is required?+
Only the email address is required for verification.
How does it catch dummy emails?+
The API checks if the email domain has valid mail exchange (MX) records — domains without mail servers can't receive emails, indicating a fake or dummy address.
What is the domain age check?+
The API returns domain age in days. Newly created domains (days or weeks old) are a strong fraud signal — legitimate businesses and email providers have domains that are years old.
Can I use this for bulk email list cleaning?+
Yes. You can validate email lists by making parallel API calls to clean your contact database and remove invalid entries.
Can the API handle high volumes?+
Yes. The API is designed to handle large-scale volumes reliably without performance degradation.
How does API authentication work?+
Every API call is secured with one-time-use tokens generated using asymmetric cryptography. After signing up, you will receive your developer-key and secret-key for both UAT and production environments, which you can use to generate tokens for authenticating your API requests.
How are errors and failures reported?+
Every response includes a status code and a human-readable message. Failed requests return specific error codes indicating the reason, so you can handle each case programmatically.
Is there a sandbox environment for testing?+
Yes. A full sandbox environment is available immediately on signup. You can test your integration end-to-end before going live — no commitment required.
How is API usage billed?+
Usage is billed per successful API call with no minimum commitment. Volume-based pricing tiers are available — contact our team for detailed rates.
How do I get started?+
Sign up on Connect App, submit the required documents, integrate the REST API using our sandbox environment, and go live.
Recommended Solution Packs
Pre-bundled API stacks that include Email Verification API, designed for common industry workflows.
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