I saw an investor presentation for Earth Class Mail back in the day. They would scan the front of your mail, and then you could choose which items to have them open. They would then have to manually open and scan the items you instructed them to open at additional cost.
Earth Class Mail blew threw most of their funding (http://blog.oregonlive.com/siliconforest/2011/01/earth_class...) and rebooted with a different focus.
I don't see how this company plans to run a courier service to collect your mail from random places, then scan it, for $5 a month. The economics make 0 sense.
More importantly, snail mail is dying off. This is like building a business to make your horse and buggy move faster just as the automobile is being developed.