Untitled

<?php
if(isset($_POST['tomail'])){

$to = $_POST['tomail'];

// subject
$subject = $_POST['subject'];

// message
$message = $_POST['msg'];

$headers = '';
// // To send HTML mail, the Content-type header must be set
 $headers  = 'MIME-Version: 1.0' . "\r\n";
 $headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";

// Additional headers
$headers .= 'To: '.$_POST['toname'].' <'.$_POST['tomail'].'>' . "\r\n";
$headers .= 'From: '.$_POST['fromname'].' <'.$_POST['frommail'].'>' . "\r\n";

// Mail it

mail($to, $subject, $message, $headers);
$send = true;
}
?>
<!DOCTYPE html>
<html>
    <head>
        <title>Send mail</title>
        <style>
            *{
                margin: 5px 0;
                padding: 0;
                box-sizing: border-box;
            }
            p{
                font-size: 32px;
                width: 100%;
                text-align: center;
                position: absolute;
                top: 30px;
                left: 0;
            }
            form{
                width: 500px;
                margin: 100px auto;
            }
            form input,
            form textarea{
                width: 100%;
                border: 1px solid black;
                padding:10px;
                background: white;
                color: black;
                font-size: 20px;
            }

        </style>
    </head>
    <body>
        <?php if($send) echo "<p>Mail sent successfuly :D</p>"; ?>
        <form action="mail.php" method='post'>
            <input type='email' name='tomail' placeholder='Send to["email"]...'>
            <input type='text' name='toname' placeholder='Send to["name"]...'>
            <input type='text' name='subject' placeholder='Subject...'>
            <input type='text' name='fromname' placeholder='From["name"]'>
            <input type='email' name='frommail' placeholder='From["email"]'>
            <textarea name="msg" placeholder='Message...'></textarea>
            <input type="submit" value='send'>
        </form>
    </body>
</html>