automatically send emails when all parties completed the form

app/views/submitter_mailer/completed_email.html.erb

@@ -2,6 +2,6 @@
   <%= auto_link(simple_format(h(ReplaceEmailVariables.call(@email_config.value['body'], submitter: @submitter)))) %>
 <% else %>
   <p>Hi there,</p>
-  <p><%= @submitter.email %> has completed the "<%= @submitter.submission.template.name %>" form.</p>
+  <p>"<%= @submitter.submission.template.name %>" form has been completed by <%= @submitter.submission.submitters.order(:completed_at).map { |e| e.name || e.email || e.phone }.join(', ') %>.</p>
   <p><%= link_to 'View Submission', submission_url(@submitter.submission) %></p>
 <% end %>