What are some best practices for ensuring that emails sent through PHP are RFC-compliant and do not get caught in spam filters?

Ensuring that emails sent through PHP are RFC-compliant and do not get caught in spam filters involves setting proper headers, including a valid From address, adding relevant content and avoiding spammy content. One important step is to use a trusted mail server to send emails. 

// Set proper headers
$headers = "MIME-Version: 1.0" . "\r\n";
$headers .= "Content-type:text/html;charset=UTF-8" . "\r\n";

// Set valid From address
$from = "From: Your Name <yourname@example.com>";

// Send email
$to = "recipient@example.com";
$subject = "Test Email";
$message = "This is a test email.";
mail($to, $subject, $message, $headers, $from);

Keywords

PHP email RFC-compliant spam filters deliverability

Related Questions