Email Verification API
Build trust and get valuable data through email verification
Validate an email ID through detailed personal and company data including the email's status (valid or invalid), account details, domain information, SMTP provider, and demographic details like gender, country, and city.


20+
output data fields
100M+
emails verified
<5s
API response time
Trusted by industry leaders
Emails are the easiest way to trust your user
Build trust, onboard with confidence, and collect genuine emails — all in seconds
Make your user onboarding quick and safe
Prevent fake or misspelled email addresses during sign up and keep bad players at bay. Detect and prevent sign up with multiple accounts with duplicate email IDs
Keep your email lists clean and reliable
Verify identities by capturing only verified email addresses. Get details if an email ID is non-existent, inactive, disposable, or mistyped, and never lose a lead again.
Get personal and company info
Enter the email address provided by the user and extract personal details and company information like legal name, phone number, EIN, two digit company SIC and NAICS codes.
Know everything about an email ID and the account associated with it

Input
- Email address of the person or organization to be verified.
Output
- Email is valid and active.
- Email domain is legitimate.
- Online presence and digital footprint.
- Domain is associated with the claimed organization.
- Total number of employees in the organization.
Why Signzy?
Let Signzy be your partner against fraud - It’s our job to keep you secure while you scale
Meet us where you work
We are flexible and integrate easily with your existing or aspiring tech stack.
Grows with you
Our support and functionality always scales with your business and needs.
Tech first, not trend-first
We were using AI and ML for verification before they were buzzwords in the industry.
Never non-compliant
Our teams work dedicatedly on global + local regulations, so you never go to bed worrying about compliance.
Privacy-friendly
We are in the business of both data and trust, which means your information is always safe with us
User first, always
We help you reduce drop offs and strike the delicate balance between speed and security
1 email account - endless use cases
Signzy’s Email Validation API has a wide range of use cases across domains
Banking, Financial Services, and Insurance (BFSI)
- Fraud Prevention:
- KYC Compliance:
- Transaction Notifications:
Client & Customer Management
- Onboarding New Clients:
- Credential Verification:
- Account Recovery:
Vendor and Partner Management
- Vendor Verification:
- Partner Communication::
Recruitment & Hiring
- Candidate Verification:
- Application Tracking:
Legal and Compliance
- Stakeholder Verification:
- Audit Trail:
Technology and SaaS
- User Registration:
- Subscription Management:
E-Commerce and Retail
- Order Confirmation:
- Promotional Campaigns:

Build your end-to-end identity verification stack
Your business is unstoppable - so why should we stop at email verification?
Phone verification
Send personalized OTP messages through SMS, emails, and voice notes to your users to authenticate account opening and transaction processes easily.
Domain verification
Verify a domain and ensure business legitimacy and status. Extract essential information like legal name, founding year, location, contact details, business operations, etc.
Business Verification
Build trusted business relationships with UBO checks, document extraction, database validation, background checks, AML screening, and much more.
Identity Verification
Onboard users with confidence with Signzy’s foolproof KYC system. ID checks, biometric verification, criminal screening, all work together to build dynamic user risk profiles.
Integrate once. Validate endless emails.
Integrate the API during lunch hour, customize based on your needs, and go live within 2-4 weeks

FAQ
What is the Email Verification API?
The Email Verification API allows you to input a user's email address and retrieve detailed information such as organization, domain, full name, employment status, company name, social media profiles, and geographical details like city, state, and country.
How does the Email Verification benefit my business?
By verifying email addresses, you can ensure data accuracy, reduce fraud, lower costs, and decrease customer drop-offs. This leads to improved applicant growth and more efficient onboarding processes.
In which countries is the Email Verification API available?
The API is available across more than 180 countries worldwide, enabling global user onboarding while maintaining local compliance.
How does the API help in reducing fraud?
By verifying the authenticity of email addresses and retrieving associated information, the API helps identify and filter out invalid or potentially fraudulent entries, thereby reducing the risk of fraud.
Is the Email Verification API compliant with global data protection regulations?
Yes, the API is designed to comply with global data protection standards, ensuring that all user and business data is handled securely and in accordance with relevant regulations.
What is the response time of the API?
The API is optimized for real-time verification, providing instant access to user information upon submitting an email address.
How can I get support if I encounter issues with the API?
You can troubleshoot through our documentation or get in touch with us through connect@teamsignzy.com