With as many people who use email as their primary communication tool, I think that delivered postal mail better known online as “Snail Mail” is no longer necessary. I cannot remember the last time that I sent a written letter, while I send at least 2 e-mails everyday! Even important mail like bills can now be paid online with a credit card! The Internet can be used to send both card and share pictures, which are, even more things that do not need to be sent by postal mail. Money can be transferred or gifted via Paypal or any other similar service. The other advantage of communicating over the internet is that messages are received instantly while, postal mail takes at least 2 days to be received.
One service that needs to continue is for physical packages because that cannot be done any other way currently. But, that will have to continue still!