It does the invoice part but only for product based business. For service based business there is no way to modify the columns names from quantity to hours or labor cost , etc. Its basically based on physical product based invoices.

It does not have customer portal. You can only share the invoice with your customer. thats it. Portal has a meaning. This is basically giving them access to see the invoice like dropbox or google file sharing.

It has articles or blog section on dashboard that you cant get rid of. Its always there. and its about their product articles. Common, on dashboard??

I did not even tested smtp and custom domain.

2.5 Taco