Verify the existence, validity & quality of any email address

We Help You Reach Maximum Inbox by and Maintain Ip Reputation

For every email address, we check

Check the email address against for common typos regarding popular email domains. Check fake email patterns.

Transactional SMS

Removal of Invalid Email Addresses

Free your teams to connect on one global platform—with the devices they love.

 Voice call API

Spam Trap and Abuse Email Verifier

Set up new users and teams around the world in minutes.

Text to Speech Service

Email Address List Append

Stay online with enterprise-grade security and an industry-leading 99.999% uptime SLA.

Email Validation, including Mailbox check without

Our Email List Validation Tool Includes

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Check the availability of the email address domains by using DNS MX records.

Bulk SMS Api

Integrate our Email API into your Application

Increase marketing campaign results

In email marketing, it is important that the emails you send are verified, validated, and received by customers. One of the most common causes of bounced emails is sending them to unverified email addresses.

Lets you stay in touch with your users knowing you have a verifiable email address for: credit card expiration, receipts, new features and offerings, etc.

Get started in no time with our easy integration

Our simple signup process and easy to use User Interface enables you to start sending messages to your customers in just one go.

$auth=Your auth key;
$emails = example@mail.com,demo@gmail.com; 
Method: POST
JSON:

$url = 'https://knockinbox.com/api/emailVerify.php{"auth":"$auth","emails":"$emails"}';

SendEmail($url);  // call function that return response with code

function SendEmail($hostUrl){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $hostUrl);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_POST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0); // change to 1 to verify cert
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
//curl_setopt($ch, CURLOPT_USERPWD, "$username:$password");
$result = curl_exec($ch);
return $result;
} 

Thousands of customers worldwide trust Datagen for sending millions of messages to their customers. The single SMS API integration service can transform your business and take it to great heights. With it.

  • Multiple Routing for Failover
  • Free Credits for Startup
  • Highly Scalable API built for any business volume
  • Multiple Routing for Failover
  • Free Credits for Startup

The trusted business communications platform

Our simple signup process and easy to use User Interface enables you to start sending messages to your customers in just one go.

Transactional SMS

SMS

Talk to your customers on their own home turf, build trust, and enrich the customer journey – all with one easy API.

 Voice call API

WhatsApp

Talk to your customers on their own home turf, build trust, and enrich the customer journey – all with one easy API.

Text to Speech Service

Verification

Talk to your customers on their own home turf, build trust, and enrich the customer journey – all with one easy API.

Excited? Let’s Talk

Our happiness lies in the client's satisfaction. Many of our clients have also expressed their satisfying experience through reviews and testimonials cited here. Their appreciation is the proof of our perfect creativity, meaningful results and committed quality.

Datagen works for businesses of all sizes and shapes. Start With Free Plan .
EMAIL VALIDATION API

Our Email Validator API allows you to verify email addresses instantly on your platform. You` can check the validity of emails in any language including .NET, JQUERY, PHP, PYTHON, JAVA, etc.

Our tool checks for domains that are identified as catch-all domains. Catch-all domains are domains which return valid for all emails. Each email address validation brings you closer to better email hygiene. Easily filter and download the results of your validated list.

EMAIL BOUNCE VALIDATOR

Our email validation software tells you which emails will bounce. To keep your bounce rate under control, use an email cleaning system before every campaign.

High Priority Bulk SMS Services City in India!

For sales enquiry, please call us on 91-9999-706-864 or email us at hello@Knock Inbox.com and we will get back to you.