How to display my html page in mail box - php

Question

<?php
$to = 'abc#gmail.com';
$subject = 'the subject';
$headers = 'MIME-Version: 1.0' . "\r\n";
$headers = 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
$message = file_get_contents('http://domain.com/newsletter.html');
$headers = 'From: xyz#gmail.com' . "\r\n" .
'Reply-To: xyz#gmail.com' . "\r\n" .
'X-Mailer: PHP/' . phpversion();
mail($to, $subject, $message, $headers);
?>
This in my mail code. Here I am sending my newsletter to my existing customer.
Can anyone help me how can I send/open the newsletter as the page through mail ?

Answer 1

I suggest you use the following, yet you won't be able to use an http:// call, because this goes against security reasons.
By doing so, anyone could include whatever they want from whatever website. The file must reside on your server in order for the following to work.
Making use of the include(), ob_start() and ob_get_clean() functions.
You must use a relative path to the file you wish to include.
<?php
ob_start();
include 'file.xxx';
$message = ob_get_clean();
$to= 'email#example.com';
$subject = 'the subject';
$headers = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
$headers .= 'From: email#example.com' . "\r\n" .
'Reply-To: email#example.com' . "\r\n" .
'X-Mailer: PHP/' . phpversion();
if(mail($to, $subject, $message, $headers)){
echo "Message sent.";
}
else{
echo "There was a problem. Check your logs.";
}
?>
Footnotes:
I quote jsalonen from a comment: "Keep in mind that CSS support in email readers is (probably intentionally) very limited: campaignmonitor.com/css - so if it works in a regular browser, it may or may not work in an email reader."
Most Email clients such as Google will ignore CSS, so it's best to use inline CSS.
Images:
Another thing you will need to do is, if you are using images, then that's where you will need to use an http:// call to the image location(s).
I.e.: <img src="http://www.example.com/images/image_1.jpg">

Answer 2

if allow_url_fopen is available in the ini file, you can do this:
$html = file_get_contents('http://domain.com/newsletter.html');
$message = $html;
The reason this should work is because most email clients can read emails sent as HTML (as long as you're sending emails as HTML and not just plaintext emails).
You can use echo htmlspecialchars($html); to see what HTML you're sending.