I'd like to see a hologram or something as the stamp, only accessible to people with a code key that proves they have been invited to send me mail. A company c

I'd like to see a hologram or something as the stamp, only accessible to people with a code key that proves they have been invited to send me mail. A company can send a request via e-mail or a social netowrk to "schedule a delivery" that I will read. If I decline, no code, and no permission to send mail. Then, every mail without a hologram can be thrown in a designated bin by the delivery guy (trash, recycle, or what not). It is a huge social cost for CCC million usa citizens (and other around world) to have to wast time with this <sorting> of junk mail everyday. Since the mail guy is sorting it out, this would let him also sort the trash from what is actually useful.