vendor self service

This might not be the right community but I'll start here.  My accounting dept wants to allow vendors we purchase from to inquire on their purchase order status and payment status so they won't have to call to see if we've paid.  We do not currently use Vendor/Supplier Self Service but I want to know if this is a good place to start.  I know it has much more functionality but I only need minimal inquiries.  Does anyone have suggestions?
Thanks