Are there any specific headers or settings that need to be included when sending HTML emails through PHP to ensure proper rendering?

When sending HTML emails through PHP, it is important to include specific headers to ensure proper rendering. One key header to include is "Content-Type: text/html" to indicate that the email content is in HTML format. Additionally, setting the "From" header with a valid email address can help prevent the email from being marked as spam. 

<?php
$to = "recipient@example.com";
$subject = "HTML Email Test";

$message = "
<html>
<head>
<title>HTML Email</title>
</head>
<body>
<h1>Hello, this is a test HTML email!</h1>
<p>This is a paragraph in the email body.</p>
</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 HTML emails headers settings rendering.

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