Hello Reader's! If you want send an email with secure SMTP with you should choose google gmail smpt. And the code liberary is here:-

  $mail = new PHPMailer(); // create a new object
    $mail->IsSMTP(); // enable SMTP
    $mail->SMTPDebug = 1; // debugging: 1 = errors and messages, 2 = messages only
    $mail->SMTPAuth = true; // authentication enabled
    $mail->SMTPSecure = 'ssl'; // secure transfer enabled REQUIRED for Gmail
    $mail->Host = "smtp.gmail.com";
    $mail->Port = 465; // or 587
    $mail->IsHTML(true);
    $mail->Username = "email@gmail.com"; //put your gmail id here
    $mail->Password = "password";
    $mail->SetFrom("example@gmail.com");
    $mail->Subject = "Test";
    $mail->Body = "hello";
    $mail->AddAddress("email@gmail.com");

     if(!$mail->Send()) {
        echo "Mailer Error: " . $mail->ErrorInfo;
     } else {
        echo "Message has been sent"; // and you can make the redirect here

     }