discourse/app/assets/javascripts/admin/templates/email-index.hbs

<table class="table">
  <tbody>
    <tr>
      <th>{{i18n 'admin.email.delivery_method'}}</th>
      <td>{{delivery_method}}</td>
    </tr>

    {{#each model.settings as |s|}}
      <tr>
        <th style='width: 25%'>{{s.name}}</th>
        <td>{{s.value}}</td>
      </tr>
    {{/each}}
  </tbody>
</table>

<form>
  <div class='admin-controls'>
    {{#if sendingEmail}}
      <div class='span15 controls'>{{i18n 'admin.email.sending_test'}}</div>
    {{else}}
      <div class='controls'>
        {{text-field value=testEmailAddress placeholderKey="admin.email.test_email_address"}}
      </div>
      <div class='controls'>
        {{d-button
          class="btn-primary"
          action=(action "sendTestEmail")
          disabled=sendTestEmailDisabled
          label="admin.email.send_test"
          type="submit"}}
        {{#if sentTestEmailMessage}}<span class='result-message'>{{sentTestEmailMessage}}</span>{{/if}}
      </div>
    {{/if}}
  </div>
</form>