I am writing a function to send a mail to specific user?

What I am trying to do is, if error occurs I want to keep on sending the mail until the mail is sent.

    function sendmail() {
        $name = mysql_escape_string($name);
        $email = mysql_escape_string($email);
        $phone = mysql_escape_string($phone);
        $content = nl2br(mysql_escape_string($content));
        $subject = "mail from ".$name." (".$email.", Ph: ".$phone.")";
        $mail = @mail($feedback,$subject,$content,$headers);
        if($mail) { echo "Your mailis send"; }
        else { echo "We are sorry for the inconvienience, but we could not send your mailnow."; }
}   

the above function displays error message but instead of giving the error, I want to try to send the mail until the mail is finally sent.