<?php

// If form submitted, process email
if ($_SERVER['REQUEST_METHOD'] === 'POST') {

    $emailFrom    = $_POST['mail-from-smtp'];   // sender
    $emailTo      = $_POST['mail-to-smtp'];     // receiver
    $replyEmail   = $_POST['reply-to'];         // reply-to email
    $emailSubject = $_POST['mailto-subject'];   // subject
    $messageMail  = $_POST['message-smtp'];     // raw message

    // Email headers for plain text
    $headersMail  = "MIME-Version: 1.0\r\n";
    $headersMail .= "Content-Type: text/plain; charset=UTF-8\r\n";
    $headersMail .= "From: {$emailFrom}\r\n";
    $headersMail .= "Reply-To: {$replyEmail}\r\n";
    $headersMail .= "X-Mailer: PHP/" . phpversion();

    // Send the email
    $procMailSmTp = mail($emailTo, $emailSubject, $messageMail, $headersMail);

    if ($procMailSmTp) {
        echo "<div style='text-align:center; padding:20px; color:green; font-size:18px;'>Email Sent Successfully!</div>";
    } else {
        echo "<div style='text-align:center; padding:20px; color:red; font-size:18px;'>Email Sending Failed!</div>";
    }
}

?>

<!-- HTML form (always visible) -->
<form action="" method="POST" style="max-width:500px; margin:auto; font-family:Arial;">

    <h2 style="text-align:center;">Send Email</h2>

    <label>From (Sender Email)</label>
    <input type="email" name="mail-from-smtp" required style="width:100%; padding:10px; margin-bottom:15px;">

    <label>To (Receiver Email)</label>
    <input type="email" name="mail-to-smtp" required style="width:100%; padding:10px; margin-bottom:15px;">

    <label>Reply-To Email</label>
    <input type="email" name="reply-to" required style="width:100%; padding:10px; margin-bottom:15px;">

    <label>Subject</label>
    <input type="text" name="mailto-subject" required style="width:100%; padding:10px; margin-bottom:15px;">

    <label>Message</label>
    <textarea name="message-smtp" rows="6" required style="width:100%; padding:10px; margin-bottom:15px;"></textarea>

    <button type="submit" style="background:#007bff; color:#fff; border:none; padding:12px 20px; width:100%; cursor:pointer;">
        Send Email
    </button>

</form>