title: How to send emails with multiple, dynamic smtp using Actionmailer/Ruby on Rails
body: <p>I saw this post but mine is slightly different:</p>
  
  <p><a href="https://stackoverflow.com/questions/1559879/rails-actionmailer-with-multiple-smtp-servers">Rails ActionMailer with multiple SMTP servers</a></p>
  
  <p>I am allowing the users to send mail using their own SMTP credentials so it actually does come from them.</p>
  
  <p>But they will be sent from the Rails app, so that means for each user I need to send their emails using their own SMTP server.</p>
  
  <p>How can I do that?</p>