Email Validation
Send Mail to Recipient

We Help You Reach Maximum Inbox by and Maintain

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.

Send Mail

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.

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

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

Pricing

Pay only for what you use

 Voice call API

Free Forever

No credit card required


  • Unlimited subscribers
  • Up to 62K emails per month
  • Authkey branding on emails and unsubscribe page
 Voice call API

Unlimited Sending

$0.1 per 1000 Emails you send


  • Unlimited subscribers
  • unlimited emails per month
  • authkey branding on emails and unsubscribe page

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