I am Person A. I get the bill form dropbox and wish they would stop updating it.
Create folder X and place in dropbox.
Upload several files and maybe folders to folder X
Share folder X with person B
person B just needs to click on link or whatever to start download not signup not pass go not anything more to complain about. Why Why Why is this so difficult for you to understand. I do not want 10 different emails that they can not access the link etc. This is some real simple ****** that dropbox was very good at now they have completely screwed this app up and I will not renew until they fix it. Probably moving to Box.