DSA Confusion?

So I got sent download links and product keys and things for my software, so I already have all the software available to me, downloaded and ready to go, for whenever I need it, however I’ve got many emails about a delivery of things? I was contacted by two out of three of the software companies with accounts already to go, and the third I already had downloaded and had product keys and things for, so my question is, I don’t understand what is being delivered to me?