Accounts Payable Automation

Hello!

We are looking to automate our accounts payable process.  We would like to go paperless and have a system that would monitor an A/P email account, allow us to enter A/P invoices, use / relieve purchase orders and route invoices for approval digitally. Not looking to hear from sales people, only users that have found something that works well.

We are using Sage 100 Contractor.

Any feedback on HH2 document flow, Timberscan?  Any others?