Are there any best practices for setting up the Return-Path on emails sent using PHP's mail() function?

When sending emails using PHP's mail() function, it's important to set the Return-Path header to ensure that bounce-back messages are delivered correctly. To do this, you can set the fifth parameter of the mail() function to include the Return-Path address. 

$to = "recipient@example.com";
$subject = "Test Email";
$message = "This is a test email.";
$headers = "From: sender@example.com\r\n";
$return_path = "-f returnpath@example.com";

mail($to, $subject, $message, $headers, $return_path);

Keywords

Return-Path emails PHP mail() function setup

Related Questions