title: Clipboard functionality in email template
body: <p>I want to send a coupon code in the email template. 
  A Small button that will copy the content of a input element on the clipboard.</p>
  
  <p>By email Template, i mean i want to send a email which will have a coupon code and there will be a button in the email template which will allow me to copy it to clipboard. Can this be done? </p>
  
  <p>Any help will be appreciated. </p>
  
  <p>Considering that javascript cannot be added inline to the email template, i couldnt think of any other solution.</p>