How can I prevent my emails from being flagged as spam?

Question

My emails are being flagged as spam. How can I prevent this? Here's how I'm sending them:

public function sendMail($to,$subject,$from,$headers)
{
    $headers .= "From: ".$from. "<support@mydomain.com>";
    $headers .= "MIME-Version: 1.0" . "\r\n";           
    $headers .= "Content-type: text/html; charset=ISO-8859-1\r\n";
    $headers .= "X-Priority: 3\r\n";
    $headers .= "X-Mailer: smail-PHP ".phpversion()."\r\n"; 

    $message .= $this->getMessage();

    return mail($to,$subject,$message,$headers);    
}

Don't you see a half dozen questions with similar titles over in the **Related** sidebar? — Barmar, Jun 11 '13 at 04:57

score 0 · Answer 1 · answered Jun 11 '13 at 04:57

You can partially control it, add headers in correct format..use swiftmail or other apart from php mail() some mail servers feel bad if send via php mail()

Check for any blacklisting as well from mail servers.

Always test it on live wires, check FILTERS if you are using Yahoo.

How can I prevent my emails from being flagged as spam?

1 Answers1