A quick way to know if an order is an online order OR a POS order that requires shipping is to add the following code to your staff’s order notifications in the notifications editor.
You can then use your favourite email program to filter out these emails and then have a workflow process for online orders.
{% if fulfillment.requires_shipping %}
**-- REQUIRES SHIPPING --**
Fulfillment Status: {{order.fulfillment_status}}
{% endif %}