PHPMailer '$mail->From = $_POST['email'] not working - php

Question

I have set up a contact form on my website that people can use to email me. The form allows them to leave their email behind so I can get back to them somehow. However for some reason no matter what email is left, the system seems to always think that I am the one who sent the email to my own email address, I am guessing this is due to the $mail->Username line of code being me? Although the from should set this, it seems it won't even if I enter the from address directly into the code.
This is the form I am using on my site to submit the form itself.
<form id="contact-form" name="contact-form" method="post" action="contact-form.php" enctype="application/x-www-form-urlencoded">
<input type="text" placeholder="Name" name="name" required="true">
<i class="fa fa-envelope"></i><input type="email" placeholder="Email" name="email" required="true">
<input type="text" placeholder="Subject" name="subject" required="true">
<textarea placeholder="Message" name="message" rows="7" required="true"></textarea>
<button type="submit" name="submit" value="submit">Send</button>
<button type="reset" value="reset">Reset</button>
</form>
The code for the php to be executed when the form is submitted is this.
<?php
require 'assets/PHPMailer/PHPMailerAutoload.php';
$mail = new PHPMailer;
$mail->SMTPDebug = 3; // Enable verbose debug output
$mail->isSMTP(); // Set mailer to use SMTP
$mail->Host = 'smtp.live.com'; // Specify main and backup SMTP servers
$mail->SMTPAuth = true; // Enable SMTP authentication
$mail->Username = 'myemail#hotmail.co.uk'; // SMTP username
$mail->Password = 'mypassword'; // SMTP password
$mail->SMTPSecure = 'tls'; // Enable TLS encryption, `ssl` also accepted
$mail->Port = 587; // TCP port to connect to
$mail->From = $_POST['email'];
$mail->addAddress('myemail#hotmail.co.uk', $_POST['name']); // Add a recipient
$mail->addReplyTo('info#example.com', 'Information');
$mail->isHTML(true); // Set email format to HTML
$mail->Subject = $_POST['subject'];
$mail->Body = $_POST['message'];
$mail->AltBody = $_POST['message'];
if(!$mail->send()) {
echo 'Message could not be sent.';
echo 'Mailer Error: ' . $mail->ErrorInfo;
} else {
echo 'Message has been sent';
}
?>
Any help would be much appreciated, thank you.

Answer 1

Some systems just don't allow you to use a from address that's anything other than your own as an anti-forgery measure - because make no mistake, what you're trying to do is forge their address! It's also likely to run into problems with anyone that uses SPF, so you really should not try to do this.
Gmail will allow you to set specific aliases, or use your own domain.
reply-to is probably the most practical solution to this, or just provide a mailto link in the message body.

Answer 2

I think you don't have to "pretend" $mail->From = $_POST['email']; that someone have send you an email because as you can see it wont work. If you are trying to send email from someone to yourself just to have ability to push "reply to" button and write to this person use:
$mail->AddReplyTo($_POST['email']);
Email will be send from your mailbox to your mailbox but you will respond to email posted by the user.