PHP联系人表单发送没有信息的电子邮件

我收到了来自我的网站联系表单的电子邮件，但没有收到任何内容。

下面是我的代码:

<?php
$name       = @trim(stripslashes($_POST["name"])); 
$from       = @trim(stripslashes($_POST["email"])); 
$subject    = @trim(stripslashes($_POST["subject"])); 
$message    = @trim(stripslashes($_POST["message"])); 
// recipient address
$to = "admin@deptfordtechservices.com";
// subject of email
$re = "New Inquiry";
// message creation
$contact = "Name:".$name."'nEmail:".$from."'nSubject:".$subject."'r'n";
$txt = "Message:".$message."'r'n";

$fmsg = $contact."'r'n".$txt;
$msg = wordwrap($fmsg, 70);
// send email
mail($to,$re,$msg);
die;

<form id="main-contact-form" name="contact-form" method="post" action="sendemail.php">
    <div class="form-group">
        <input type="text" name="name" id="name" class="form-control" placeholder="Name" required>
    </div>
    <div class="form-group">
        <input type="email" name="email" id="email" class="form-control" placeholder="Email" required>
    </div>
    <div class="form-group">
        <input type="text" name="subject" id="subject" class="form-control" placeholder="Subject" required>
    </div>
    <div class="form-group">
        <textarea name="message" id="message" class="form-control" rows="8" placeholder="Message" required></textarea>
    </div>
    <button type="submit" class="btn btn-primary">Send Message</button>
</form>

// Contact form
var form = $('#main-contact-form');
form.submit(function(event){
    event.preventDefault();
    var form_status = $('<div class="form_status"></div>');
    $.ajax({
        url: $(this).attr('action'),
        beforeSend: function(){
            form.prepend( form_status.html('<p><i class="fa fa-spinner fa-spin"></i> Email is sending...</p>').fadeIn() );
        }
    }).done(function(data){
        form_status.html('<p class="text-success">Thank you for contact us. As early as possible  we will contact you</p>').delay(3000).fadeOut();
    });
});