title: how to mask recipients addresses , action mailer 4 with bcc: or other
body: <p>I am using action mailer with an array of emails. Emails are sending out successfully but in the received email, everyone can see the other recipients. I want to hide them from each other. </p>
  
  <p>There are many posts about this and I've tried many things without success. Would be great if someone can spot what I'm doing wrong. I'm using rails 4.1.7. with delayed_job and devise. I am sure this must be something easy i have missed. Thanks in advance for any help.</p>
  
  <p>My mailer is : </p>
  
  <pre><code>def send_email(mymodel)
    @mymodel = mymodel
    emails = @mymodel.followers.collect(&amp;:email) 
    @url  = 'http://example.com/'
    mail(:to =&gt; emails, :bcc =&gt; ["noreply@example.com"], subject:"myemailsubject")  
  end
  </code></pre>