With Spiro you can white-label your portals, and there is no charge for this.
The portals that can be white-labelled include:
The Client Portal (where your clients place orders)
portal.myDomain.com
Where clients download media
download.myDomain.com
Where your team logs into the Admin Portal
admin.myDomain.com
For more information, see the support article here.
You can also white-label your emails. Please see the support article here.