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What are Verification APIs?

Verification APIs are programming interfaces for applications that enable developers to integrate a verification service into their software applications. With the help of these APIs, businesses can automate their verification process for user data, such as email addresses, phone numbers, and identification documents, by connecting to third-party verification services.
Verification APIs help businesses and organizations to streamline their verification processes, reducing the need for manual verification and human intervention. These APIs can be used in various industries, including finance, healthcare, e-commerce, and social media. They are particularly useful for businesses that need to verify their users’ identity or authenticate user data’s accuracy.

Features of OTP Verification API Solutions

Stay ahead of fraudsters with our advanced verification code API

Real-time Verification

Helps businesses to fetch instant verification results to businesses, allowing them to make quick decisions and provide a better customer experience.


The advanced encryption algorithm of API verification helps businesses ensure customer data security and privacy.


Businesses can customize the verification process to meet their specific needs and requirements.

Fraud Detection

With OTP verification API, businesses can detect and prevent fraud by flagging suspicious activity and identifying potential fraudulent behavior.

Identity Verification

The Verification API enables businesses to authenticate customer identities using government databases, credit bureaus, and social media platforms.

Why Integrate A Verification API Portal?

Businesses integrate verification API services into their existing application or CRM to achieve higher security standards.  This service should support the delivery of codes through various channels, including




This integration helps mitigate the risk of unauthorized access and safeguards sensitive user information from potential breaches.

How Fonada’s Verification API works?

Stage 01

An app or website requests verification from the API.

Stage 02

The API sends a code via SMS, email, or call.

Stage 03

The user enters the code.

Stage 04

API verifies the code.

Stage 05

The user accesses the service if the code is correct.

Stage 06

API ensures data security and privacy using advanced encryption and security protocols.

Authentication Platforms For API Verification


Verify user authentication with one-time passwords (OTP) using SMS services. Approve sender identification compliance with rules and guidelines.


Send Text-to-speech (TTS) code to users with the help of a voice note. It acts as a backup for SMS verification API.


Authenticate the user workflow with WhatsApp inclusion. This platform enables businesses to reach clients via SMS or Voice service.

Fonada’s Verification API Service

Simplify Your Verification Process With Safer, Smarter & Cheaper Solutions!

Flash Call Verification

Say goodbye to the traditional SMS verification method and switch to a faster, more cost-efficient alternative.

Data Verification

Get verified data instantly and enjoy proven security measures while enjoying a seamless user experience. Our services provide everything you need for a smooth and hassle-free verification process.

Phone Call Verification

Our global call verification services are capable of verifying any user anytime, anywhere. We offer verification for both mobile and landline numbers, ensuring comprehensive coverage for all your verification needs.

Use Cases Of Fonada’s API Verification Service


User Authentication

Verification APIs can be used to authenticate users during the account creation process, ensuring that only valid phone numbers are associated with user accounts.


Fraud Prevention

Verification APIs play a vital role in preventing fraud by confirming that the person attempting to access a service or make a transaction is the authorized user or not.


Two-Factor Authentication

Two-factor authentication (2FA) systems use verification API to authenticate the identity of users. In this process, users must provide both a password and a verification code sent to their phone to access their account.


Account Recovery

With the help of verification code API, businesses help users to recover lost or forgotten passwords by sending verification codes to their phone numbers.


Identity Verification

Verification API services play a crucial role in identifying users, particularly in industries such as finance and healthcare, where identity verification is critical.

Benefits of OTP Verification API

Power Up Your Verification Process with Verification API Solution

Data Accuracy

OTP verification APIs enhance user data accuracy, including email, phone, and postal addresses, by mitigating errors in real time.


API verification verifies user information authenticity, reducing fraud risk in identity documents or payment details, benefiting both businesses and customers.

Time And Cost

Automated user verification via API saves significant time and costs compared to manual methods.


Verification APIs help businesses comply with regulatory requirements like KYC and AML, ensuring legal standards are met.

Why Choose Fonada For Verification API Solution

Power Up Your Verification Process with Verification API Solution

Proven Reliability

Fonada's verification API services have been extensively tested and are proven to be reliable and secure.

Multi-Channel Support

Get Multi-channel support, making it easy for users to receive verification codes through voice, text and mail.


Experience the highly customizable service, allowing you to tailor the verification process to your business needs.


Fonada's Verification API solution is designed to handle large-scale verification requests, making it ideal for businesses of all sizes.

Competitive Pricing

Get competitive pricing and the best value for your money.

Dedicated Support

Our experts are available 24*7 to resolve all your queries and issues with the service.

Seamless Integration

Our verification API solution is easy to integrate with your existing applications or websites.

Frequently Asked Questions

What is E-mail verification API?

The email verification API, also referred to as email validation API, allows product architects and developers to incorporate email validation features into their software and applications by making API calls using various programming languages.

What is the need to verify in API testing?

API testing is crucial in verifying whether your API can handle a diverse range of anticipated and unanticipated requests as expected or not. This method is specifically intended to evaluate not only the functionality of your API but also its dependability, efficiency, and security.

How to verify SMS messages with an API?

The verification process follows the steps listed below:

– Get an API Key
– Register for the Fonada SMS API
– Create a registration form
– Integrate with the API