invoiceninja/app/views/emails/confirm_html.blade.php

<h1>{{ trans('texts.confirmation_header') }}</h1>

<p>{{ trans('texts.confirmation_message') }}</p>
<a href='{{{ URL::to("user/confirm/{$user->confirmation_code}") }}}'>
    {{{ URL::to("user/confirm/{$user->confirmation_code}") }}}
</a>

{{ trans('texts.email_signature') }}<br/>
{{ trans('texts.email_from') }}