How to use acf (Advanced-Custom-Fields) repeater in wordpress

<ul>

     <?php if(get_field('email_repeater','options')): ?>

             <?php while(has_sub_field('email_repeater','options')): ?>

                    <li>

                           <p><?php the_sub_field('email_head','options'); ?></p>

                           <a href="mailto:<?php the_sub_field('email_id','options'); ?> ">

   <?php the_sub_field('email_id','options'); ?>  </a>

                      </li>

                 <?php endwhile; ?>                           

            <?php endif; ?>

     </ul>

Remove options from  ('email_repeater','options')) if you are using a page template , or the field is not coming from option page.