<input crm-ui-id="subform.url_tracking" name="url_tracking" type="checkbox" ng-model="mailing.url_tracking" ng-true-value="'1'" ng-false-value="'0'" />
</div>
<div crm-ui-field="{name: 'subform.open_tracking', title: ts('Track Opens'), help: hs('open_tracking')}" crm-layout="checkbox">
<input crm-ui-id="subform.url_tracking" name="url_tracking" type="checkbox" ng-model="mailing.url_tracking" ng-true-value="'1'" ng-false-value="'0'" />
</div>
<div crm-ui-field="{name: 'subform.open_tracking', title: ts('Track Opens'), help: hs('open_tracking')}" crm-layout="checkbox">