We became familiar with Hubdoc because it offers a lifetime free trial account for QuickBooks Online ProAdvisors. Some time back we registered for an account (why not, it's free, right?) and I did the certification course they offer. I held off for a while because I did not have a real need for it at the time. However, I picked it up again and thought I would play around with it. I was very satisfied with the performance overall and plan to implement it through our entire firm. Further, we plan to offer it as part of a package we offer to clients to help them go paperless.
Hubdoc does three main things. It renames and saves documents that you scan and upload (or email to the custom email address they provide) into folders based on the vendor name, bill date, and amount. It can also take the information from those documents and post it to several different accounting packages. Finally, it can save the documents to several cloud storage services.