PHP mail() function

mail.php

<?php

if(isset($_POST["email"]) && !empty($_POST["email"])){

//if(!$_POST) exit;

$email = $_POST['email'];
$name = $_POST['name'];
$comments = $_POST['comments'];


//$error[] = preg_match('/\b[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b/i', $_POST['email']) ? '' : 'INVALID EMAIL ADDRESS';
if(!eregi("^[a-z0-9]+([_\\.-][a-z0-9]+)*" ."@"."([a-z0-9]+([\.-][a-z0-9]+)*)+"."\\.[a-z]{2,}"."$",$email )){
	$error .= "Invalid email address entered";
	$errors=1;
}
if($errors==1) echo $error;
else{
	//send the mail
	/*$values = array ('name','email','message');
	$required = array('name','email','message');
	 
	$your_email = "hello@gurinderhans.me";
	$email_subject = "New Message: ".$_POST['subject'];
	$email_content = "new message:\n";
	
	foreach($values as $key => $value){
	  if(in_array($value,$required)){
		if ($key != 'subject' && $key != 'company') {
		  if( empty($_POST[$value]) ) { echo 'PLEASE FILL IN REQUIRED FIELDS'; exit; }
		}
		$email_content .= $value.': '.$_POST[$value]."\n";
	  }
	}
	 */
	 
	 
	$to = "hello@gurinderhans.me";
	$from = $email;
	$subject = 'Hey there!';
	$message = "".$message."";
	$headers = "From: $from\n";
	$headers .= "MIME-Version: 1.0\n";
	$headers .= "Content-type: text/html; charset=iso-8859-1\n";
	if(mail($to, $subject, $message, $headers)){
		echo "Message successfully sent";
	} else{
		echo "Your message wasn't sent. Please try again later.";
	}
	 
	 
	/*if(mail($your_email,$email_subject,$email_content)) {
		echo 'Message sent!'; 
	} else {
		echo 'ERROR!';
	}*/
}
}
?>

Try using this for mail()