How can PHP beginners ensure that HTML tags in emails are rendered correctly when using the mail() function?

When sending HTML emails using the mail() function in PHP, beginners should ensure that the headers of the email include the Content-Type header with the value text/html. This header tells the email client to interpret the content as HTML and render the tags correctly. Without this header, the email client may display the HTML tags as plain text. 

<?php
$to = 'recipient@example.com';
$subject = 'HTML Email Test';
$message = '<html><body><h1>Hello, world!</h1></body></html>';
$headers = "MIME-Version: 1.0" . "\r\n";
$headers .= "Content-type:text/html;charset=UTF-8" . "\r\n";
$headers .= 'From: sender@example.com' . "\r\n";

mail($to, $subject, $message, $headers);
?>

Keywords

PHP mail() HTML rendering emails

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