Email validation API PHP is a way to help businesses avoid costly mistakes by verifying that the email addresses captured in opt-in forms or other data sources are valid. Invalid addresses can harm deliverability and business metrics by causing messages to be marked as spam or even bounced. The famous idiom “garbage in, garbage out” is a good reminder of why it is crucial to ensure that valid email addresses are captured and used. While PHP’s in-built and regex functions are great for basic addressing pattern checks, more advanced capabilities beyond syntax validation are available only via API services.

Using an email validation API can significantly reduce the amount of hard bounces in your email database by removing invalid addresses from your list. This can improve your email delivery rates and prevent your emails from being sent to people who never use their accounts and can’t be reached, thereby saving you money on your marketing budget.

“Email Validation API for PHP: How to Implement and Use It

There are several methods of email validation in PHP but one of the most popular is to use the preg_match( ) function. For example, you can define a regular expression that matches all alphanumeric characters except for the underscore ‘_’. You can then pass the email to the preg_match( ) function to validate it.

Another method is to create a class and make its private methods accessible as an API. You can then call the API from your code and get the results back as JSON or XML. The Abstract email validation API provides a free, simple to use email verification service that verifies the format of an email address and checks if it is a routable domain name (in other words, whether the email server exists). In addition, it can also validate the email against a database of disposable email services and can flag the address as a known spam trap or honeypot.