It's simple! Just go to the ezidox portal and enter your details and select a password. You will receive a confirmation email that will then allow you to login with those details.
Once you have registered and logged in, simply enter the email address of the customer and the set of documents that you want to collect and they will receive an email asking them to register and download the app that suits them (iOS or Android).
Then your customer just starts sending you all the documents you have specified and can track their progress as they work their way through the list. Easy!