Sending MIME Mail with PHP

You can send email with PHP Mailer with attachment and MIME type, with help of following libraries

1)PHP Mailer
you can download latest version from github

Example:

php
require 'class.phpmailer.php';

$mail = new PHPMailer;

$mail->IsSMTP();                                      // Set mailer to use SMTP
$mail->Host = 'smtp1.example.com;smtp2.example.com';  // Specify main and backup server
$mail->SMTPAuth = true;                               // Enable SMTP authentication
$mail->Username = 'jswan';                            // SMTP username
$mail->Password = 'secret';                           // SMTP password
$mail->SMTPSecure = 'tls';                            // Enable encryption, 'ssl' also accepted

$mail->From = 'from@example.com';
$mail->FromName = 'Mailer';
$mail->AddAddress('josh@example.net', 'Josh Adams');  // Add a recipient
$mail->AddAddress('ellen@example.com');               // Name is optional
$mail->AddReplyTo('info@example.com', 'Information');
$mail->AddCC('cc@example.com');
$mail->AddBCC('bcc@example.com');

$mail->WordWrap = 50;                                 // Set word wrap to 50 characters
$mail->AddAttachment('/var/tmp/file.tar.gz');         // Add attachments
$mail->AddAttachment('/tmp/image.jpg', 'new.jpg');    // Optional name
$mail->IsHTML(true);                                  // Set email format to HTML

$mail->Subject = 'Here is the subject';
$mail->Body    = 'This is the HTML message body in bold!';
$mail->AltBody = 'This is the body in plain text for non-HTML mail clients';

if(!$mail->Send()) {
   echo 'Message could not be sent.';
   echo 'Mailer Error: ' . $mail->ErrorInfo;
   exit;
}

echo 'Message has been sent';?>

You can also send Emails with SwiftMailer

Example:

php

require_once 'swift/lib/swift_required.php';

$smtp = Swift_SmtpTransport::newInstance('smtp.host.tld', 25)
  ->setUsername(' ... ')
  ->setPassword(' ... ');

$mailer = Swift_Mailer::newInstance($smtp);

$message = Swift_Message::newInstance('Your subject');
$message
  ->setTo(array(
    'user1@example.org',
    'user2@example.org' => 'User Two',
    'user3@exmaple.org' => 'Another User Name'
  ))
  ->setFrom(array('your@address.com' => 'Your Name'))
  ->attach(Swift_Attachment::fromPath('/path/to/doc1.pdf'))
  ->attach(Swift_Attachment::fromPath('/path/to/doc2.pdf'))
  ->setBody(
    $message->embed(Swift_Image::fromPath('/path/to/image.jpg')) . '" />',
    'text/html'
  )
  ->addPart('This is the alternative part', 'text/plain')
  ;
if ($mailer->send($message))
{
  echo "Message sent!";
}
else
{
  echo "Message could not be sent.";
}