Interesting business model: Company will go to your house, grab the mail out of your mailbox, scan it, and make it available to you digitally.
Copyright issues? If the company is scanning copyrighted material, which it no doubt is, would all of the scanning qualify as fair use? I think most of it would, but what about scanning a magazine or postcard artwork that the copyright owner also sells in a digital format? For example, SPIN magazine comes in paper form as well as a great digital iOS app. Would converting the paper form into digital format via this new service still be fair use?
This should be fair use, but major media companies have a near perfect track record of freaking-the-eff out over any new content delivery systems that they did not expressly authorize.