My Custom Vendor did not get an email. Why?
So, you've setup your own Vendor for orders, but they have not received an email once you hit the Transmit button on the Order page.
A common issue could be that the product itself is not set to "Drop Ship from Vendor".
The correction is easy. Edit the product (sku) that is supposed to go to the Vendor and click to the Shipping & Tax tab.
You'll click the drop down menu on the Ship Mode field and change it to "Drop Ship from Vendor".
Save the changes and go back to the order and re-transmit the order.