una/modules/boonex/massmailer/template/attributes.html

<div class="bx-massmailer-attrs flex flex-col space-y-4">
    <bx_repeat:items>
    <div class="bx-massmailer-attrs-group">
        <div class="bx-massmailer-ag-title font-bold">__title__</div>
        <div class="bx-massmailer-ag-list pt-1">__list__</div>
    </div>
    </bx_repeat:items>
</div>