That was one of our concerns, to receive information you can setup different "boxes" with an expiration date. Each box as an hard to guess url (such as https://hawkpost.co/box/19f1e7b9-f200-47ec-b5ff-918a9483a546), so only the people you shared it with, will know how to access it.

You can also set the maximum number of messages you wish to receive through that box.

I think these measures will help users avoid spam.