plugins/content/templates/user/system/common/email_page_result.stpl
<h1>Email page to a friend</h1>
<div align="center">
{if("result" eq 1)}{t(Your email was sent successfully)}!{/if}
{if("result" eq 0)}<b class="negative">{t(Cannot send email. Please contact the site admin)}!</b>{/if}
</div>