title: How to make Mandrill put recipient's email in unsubscribe URL
body: <p>First of all I know that Mandrill has it's own way of coping with unsubscribe, which is <a href="http://help.mandrill.com/entries/21813787-How-do-recipients-unsubscribe-from-emails-sent-through-Mandrill-" rel="nofollow">"Adding a link with the unsubscribe merge tag"</a> . But it stores the unsubscribed users on the account and makes <strong>rejection</strong> if sent newsletters and announcements to that recipient.</p>
  
  <p>So I have this code part which is sent to each and every recipient separately with foreach loop and sends every mail separately:</p>
  
  <pre><code>foreach($subscribers as $subscribersRow){
     $to =  $subscribersRow['usr_email'];
     $message .= '&lt;br/&gt;&lt;br/&gt;&lt;a href="'.site_url('unsubscribe').'/?email='.urlencode($to).'"&gt;Click here to unsubscribe.&lt;/a&gt;';
  </code></pre>
  
  <p>However, Mandrill has a adventage in sending email similar to forwarding by using one line of code for the $to recipient:</p>
  
  <pre><code>'to' =&gt; array(array('email' =&gt; 'joe@example.com' ),array('email' =&gt; 'joe2@example.com' ))
  </code></pre>
  
  <p>I want to use this advantage of Mandrill (2000 emails/day), delete the foreach and make <strong>Madrill server put the recipient's email</strong> in the $to place. That way this part of code will get default value, instead of unique and I will be able to use the second code-snippet. That way it won't reject the emails sent to unsubscribed(won't bother sending at all) and I'll mark it unsubscribed in my database.
  I use <a href="https://mandrillapp.com/api/docs/messages.JSON.html" rel="nofollow">Codeigniter API</a> to do the sending. Do you know how can I help Mandrill to help me with this thing.
  Thanks in advance</p>