title: DocuSign API to send instant reminder email to pending recipients
body: <p>I want to send instant reminder to the recipients who have not signed the document yet through the DocuSign REST API.</p>
  
  <p>Suppose I have sent an envelope to 3 recipients and one recipient have signed it. After some days I want to send instant reminder email to all other pending recipients or some of pending recipients. </p>
  
  <p>I know there is API available to set reminders &amp; expiration details.
  Is there any REST API available so we can send reminder email to pending recipients when user want?</p>