My family and I really like it. I invested in a small, physical scanner capable of network file sharing that we have plugged in and always ready to scan. When we get documents or receipts, we scan them and they're immediately added to the database. I also have it checking an email address (mine is custom, but you could really have it check any address) and any time a PDF or such is sent, it gets consumed and that email them gets sorted.

There are a few downsides, however. As mentioned in other posts, turning your physical stack of documents into a digital stack of documents is just trading one pile for another. At least with a digital pile, you can sort a little quicker, but you still have to sort the consumed documents and check them to make sure the engine, which is supposed to be learning, has elected to sort the documents correctly.

The compose stack is pretty easy to use, but it does benefit from a little knowledge in Docker/containers. Especially when the main container decides it's not healthy. I wouldn't recommend it to a first time Docker user, is all.

Additionally and also previously mentioned, if you're keeping important documents in it, encrypted storage with encrypted back up is important.