felhom.eu/hub/internal/web/templates/mail_hold.html

{{define "mail_hold_banner"}}{{if mailHeld}}
        <div class="flash flash-warn" id="mail-hold" role="alert">
            <strong>E-mail is on hold</strong> — this hub sends no e-mail at all, to households or to you, while the
            <code>MAIL-HOLD</code> marker is in its data directory. Mail it would have sent is dropped, not queued.
            Release the hold on the <a href="/configuration#mail-hold">Configuration</a> page once this is the only hub
            that is running.
        </div>
{{end}}{{end}}