Email Validity Checker API

Email Validity Checker API

Unlock the power of precision email delivery with our Email Validator API. Seamlessly validate email addresses with domain names to eliminate invalid entries and boost delivery rates. Ensure each message hits the mark, minimizing bounces, and optimizing your email campaigns for success. Empower your platform with the accuracy it needs to conquer the inbox.

About the API: 

Welcome to the Email Validator API, your ultimate solution for ensuring email accuracy and enhancing the success of your communication campaigns. Designed with cutting-edge technology, this API offers seamless email validation with domain name verification, empowering businesses to filter out invalid email addresses and domains, thus achieving the perfect match between delivery rates and minimum email bounce.

With the Email Validator API, you can rest assured that your email communications are reaching the right audience. Invalid email addresses are a common challenge faced by businesses, leading to higher bounce rates and reduced deliverability. By integrating our API into your platform, you can efficiently filter out incorrect or non-existent email addresses, significantly improving the effectiveness of your email campaigns.

This API goes beyond simple email syntax checks. It performs domain name validation, ensuring that the email addresses belong to active and valid domains. This feature eliminates the risk of sending emails to non-existent or expired domains, resulting in fewer bounces and a higher chance of successful delivery.

Maintaining a pristine sender reputation is crucial for successful email marketing. The Email Validator API plays a pivotal role in safeguarding your sender reputation by preventing your emails from being flagged as spam due to high bounce rates. By maintaining a clean and accurate email list, you can build trust with email service providers and increase the likelihood of your messages reaching the recipients' inboxes.

Integrating the Email Validator API into your registration or subscription process allows you to verify email addresses in real-time. This enables you to proactively prompt users to correct their email entries, reducing errors and ensuring that your communication reaches its intended recipients promptly.

Our API is designed to be user-friendly and seamlessly integrate into your existing systems. It offers robust documentation and clear guidelines for implementation, allowing developers of all levels of expertise to easily harness its capabilities.

Embrace the power of the Email Validator API and elevate your email marketing efforts to new heights of success. Say goodbye to delivery issues, high bounce rates, and ineffective campaigns. Unlock the full potential of your email communications with accurate validation, and create meaningful connections with your audience through every email sent.


What this API receives and what your API provides (input/output)?

Pass the email address that you want to validate, and detect if it's valid or not. 


What are the most common uses cases of this API?


  • Email Signup Form Validation: Integrate the Email Validator API into your website's email signup form to ensure that users enter valid and deliverable email addresses during registration. By instantly verifying email addresses with domain name validation, you can prevent fake or mistyped email entries and maintain a high-quality email list.

  • Email Marketing Campaign Optimization: Enhance the success of your email marketing campaigns by utilizing the Email Validator API to clean and validate your subscriber list. By filtering out invalid email addresses and domains, you can increase deliverability, minimize bounces, and improve overall campaign performance and ROI.

  • User Account Management: Implement the Email Validator API as part of your user account management process. When users update their email addresses or reset their passwords, the API can verify the new email entries to ensure accurate and functional communication channels with your customers.

  • E-commerce Order Confirmation: Integrate the Email Validator API into your e-commerce platform's order confirmation system. Before sending order-related emails, validate the recipient's email address to avoid failed deliveries and guarantee that customers receive critical order information in a timely manner.

  • Email List Cleansing and Enrichment: Use the Email Validator API for periodic email list cleansing and enrichment. Validate existing email data to identify and remove invalid or inactive addresses. Additionally, leverage the domain validation feature to segment email addresses based on their domain status, enabling targeted marketing efforts and personalized communication strategies.



Are there any limitations to your plans?

Besides the number of API calls, there is no other limitation

API Documentation


This API will validate emails with domain names, it is used to filter out invalid emails and invalid domains, to perfect match delivery rates and minimum email bounce


Validate - Endpoint Features
Object Description
email [Required]
Test Endpoint


                                                                                                                                                                                                                            {"message":"Valid email address.","status_code":200}


curl --location --request GET '[email protected]' --header 'Authorization: Bearer YOUR_API_KEY' 


API Access Key & Authentication

After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the Email Validity Checker API REST API, simply include your bearer token in the Authorization header.


Header Description
Authorization [Required] Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.

Simple Transparent Pricing

No long term commitments. One click upgrade/downgrade or cancellation. No questions asked.

🚀 Enterprise
Starts at
$ 10,000/Year

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The Email Validator API is designed to validate email addresses with domain names, ensuring that they are accurate and deliverable. By filtering out invalid email addresses and domains, the API helps improve email deliverability rates and minimizes bounce rates for more effective communication campaigns.

The API employs advanced algorithms to perform both email syntax and domain name validation. It checks the email address for proper formatting and then verifies the domain to ensure it is active and able to receive emails.

: When an invalid email address is detected, the API will return an appropriate response indicating the validation status. It is essential to handle such responses in your application to prompt users to enter valid email addresses or take appropriate action.

The email validation data is updated regularly to ensure accuracy and reliability. The API relies on reputable data sources to stay up-to-date with changes in domain status and email address validations.

Absolutely. The Email Validator API is designed to be easily integrated into various applications and platforms. By integrating it into your email marketing system, you can validate email addresses at the point of entry and maintain a clean and reliable subscriber list.

Zyla API Hub is like a big store for APIs, where you can find thousands of them all in one place. We also offer dedicated support and real-time monitoring of all APIs. Once you sign up, you can pick and choose which APIs you want to use. Just remember, each API needs its own subscription. But if you subscribe to multiple ones, you'll use the same key for all of them, making things easier for you.

Prices are listed in USD (United States Dollar), EUR (Euro), CAD (Canadian Dollar), AUD (Australian Dollar), and GBP (British Pound). We accept all major debit and credit cards. Our payment system uses the latest security technology and is powered by Stripe, one of the world’s most reliable payment companies. If you have any trouble paying by card, just contact us at [email protected]

Additionally, if you already have an active subscription in any of these currencies (USD, EUR, CAD, AUD, GBP), that currency will remain for subsequent subscriptions. You can change the currency at any time as long as you don't have any active subscriptions.

The local currency shown on the pricing page is based on the country of your IP address and is provided for reference only. The actual prices are in USD (United States Dollar). When you make a payment, the charge will appear on your card statement in USD, even if you see the equivalent amount in your local currency on our website. This means you cannot pay directly with your local currency.

Occasionally, a bank may decline the charge due to its fraud protection settings. We suggest reaching out to your bank initially to check if they are blocking our charges. Also, you can access the Billing Portal and change the card associated to make the payment. If these does not work and you need further assistance, please contact our team at [email protected]

Prices are determined by a recurring monthly or yearly subscription, depending on the chosen plan.

API calls are deducted from your plan based on successful requests. Each plan comes with a specific number of calls that you can make per month. Only successful calls, indicated by a Status 200 response, will be counted against your total. This ensures that failed or incomplete requests do not impact your monthly quota.

Zyla API Hub works on a recurring monthly subscription system. Your billing cycle will start the day you purchase one of the paid plans, and it will renew the same day of the next month. So be aware to cancel your subscription beforehand if you want to avoid future charges.

To upgrade your current subscription plan, simply go to the pricing page of the API and select the plan you want to upgrade to. The upgrade will be instant, allowing you to immediately enjoy the features of the new plan. Please note that any remaining calls from your previous plan will not be carried over to the new plan, so be aware of this when upgrading. You will be charged the full amount of the new plan.

To check how many API calls you have left for the current month, look at the ‘X-Zyla-API-Calls-Monthly-Remaining’ header. For example, if your plan allows 1000 requests per month and you've used 100, this header will show 900.

To see the maximum number of API requests your plan allows, check the ‘X-Zyla-RateLimit-Limit’ header. For instance, if your plan includes 1000 requests per month, this header will display 1000.

The ‘X-Zyla-RateLimit-Reset’ header shows the number of seconds until your rate limit resets. This tells you when your request count will start fresh. For example, if it displays 3600, it means 3600 seconds are left until the limit resets.

Yes, you can cancel your plan anytime by going to your account and selecting the cancellation option on the Billing page. Please note that upgrades, downgrades, and cancellations take effect immediately. Additionally, upon cancellation, you will no longer have access to the service, even if you have remaining calls left in your quota.

You can contact us through our chat channel to receive immediate assistance. We are always online from 8 am to 5 pm (EST). If you reach us after that time, we will get back to you as soon as possible. Additionally, you can contact us via email at [email protected]

To let you experience our APIs without any commitment, we offer a 7-day free trial that allows you to make API calls at no cost during this period. Please note that you can only use this trial once, so make sure to use it with the API that interests you the most. Most of our APIs provide a free trial, but some may not support it.

After 7 days, you will be charged the full amount for the plan you were subscribed to during the trial. Therefore, it’s important to cancel before the trial period ends. Refund requests for forgetting to cancel on time are not accepted.

When you subscribe to an API trial, you can make only 25% of the calls allowed by that plan. For example, if the API plan offers 1000 calls, you can make only 250 during the trial. To access the full number of calls offered by the plan, you will need to subscribe to the full plan.

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