<div id="emailAddress"><span merge-tag="{{user.email}}">email@email.com</span></div>

var emailAddress = $('#emailAddress span').text();
console.log(emailAddress);

$(document).ready(function() {
   if (emailAddress == 'email@email.com') {
       $('#wpcSection_2778753').show();
   }

   else if (emailAddress == 'email2@email.com') {
       $('#section2').show();
   }

   else if (emailAddress == 'email3@email.com') {
       $('#section3').show();
   }

   else {
       $('#default-content').show();
   }
});

.wpcPage_post_participation .wpcSection:nth-child(n+2)  {display: none;}