HowTo: Send and Receive your Postal Mail online (makeuseof.com)

“Here, you’ll find couple of services that can help you eliminate concept of paper mail from your life completely(99%). Whether you need to send a postal letter or receive all of your postal mail in PDF format, these web services let you do it. Some for receiving your postal letters and some for sending them. It’s not only more convenient but also cheaper(at least for sending).”