Problems With Emailing Through A Submit Button - php

Question

After going through my website the user can email me a file and a brief description to go along with it. However once the user of my website clicks the submit button, he goes to a page that says "this webpage is unavailable" and I don't get an email.
I have been using PHP and HTML for this part of my website and I don't know why it isn't working.
PHP
<?php
mail('Example#gmail.com', $_POST['Subject'], $_POST['Content']);
?>
HTML
<form method="post" action="email.php">
<input type="file">
<input type="text">
Content Goes Here
<br>
<br>
<input type="Submit">
</form>

Answer 1

Try to use something like libmail class for sending Emails, in most cases it fixes the problem.
If even after making it work with libmail you will get an issues, try to use SMTP along with libmail.
Cheers.
Sure, here is example of usage:
Download php_libmail class with this link http://webi.ru/base/files/tovar/php_libmail_2_1.zip
Then use this code:
<?php
include "libmail.php"; // including the class
$m= new Mail; // create instance
$m->From( "asd#asd.com" ); // from
$m->To( "who#asad.com" ); // to
$m->Subject( "Subject zzz" ); // subject
$m->Body( "Hey, pal" ); // body
$m->Cc( "copy#asd.com"); // copy of email, if need
$m->Bcc( "bcopy#asd.com"); // hidden copy of email, if need
$m->Priority(3) ; // priority of message, i think from 1 to 5
$m->Attach( "asd.gif","", "image/gif" ) ; // attachment, if need
$m->smtp_on( "smtp.asd.com", "login", "password" ) ; // via SMTP, if need
$m->Send(); // And the magic Send ;)
echo "Message body:<br><pre>", $m->Get(), "</pre>";
?>
For make functionality you need, just create simple HTML form with enctype="multipart/form-data" attribute and add any fields you want, files, inputs, texts, any of those.
And then in you PHP script accept those field values via global $_POST variable and pass accepted values into the libmail instance ;)
For accepted files use global $_FILES variable.

Answer 2

You can simply use PHP Mailer for sending any mail.
It is very helpful and easy way to do this kind of work.
Code would be like-
<?php
require_once "vendor/autoload.php";
//PHPMailer Object
$mail = new PHPMailer;
//From email address and name
$mail->From = "from#yourdomain.com";
$mail->FromName = "Full Name";
//To address and name
$mail->addAddress("recepient1#example.com", "Recepient Name");
$mail->addAddress("recepient1#example.com"); //Recipient name is optional
//Address to which recipient will reply
$mail->addReplyTo("reply#yourdomain.com", "Reply");
//CC and BCC
$mail->addCC("cc#example.com");
$mail->addBCC("bcc#example.com");
//Send HTML or Plain Text email
$mail->isHTML(true);
$mail->Subject = "Subject Text";
$mail->Body = "<i>Mail body in HTML</i>";
$mail->AltBody = "This is the plain text version of the email content";
if(!$mail->send())
{
echo "Mailer Error: " . $mail->ErrorInfo;
}
else
{
echo "Message has been sent successfully";
}
Here is a illustrative example given for this.