Do you think Postal Mail will ever disappear?

For letters and bills, yer I see them going soon. (UK has 90% of the time bills sent online)

But for packages the mail services are key.

I think the postal mail will be turned into a package service where they deliver packages and such

Probably so. Bills, I see that going away because all you basically need now is an email for paperless billing. Many companies give you discounts for that too. For packages however, the mail is the most economical way to send it. UPS and FedEx can't beat USPS's prices on Priority Mail's "If it fits it ships for $5 anywhere in the continental US".

Its definitely on its way to becoming so. The parcel service will be around for a long, long time though, as more people shop online versus in stores. Paper mail (bills, letters, etc.) will be dead within 5-7 years I believe.

I don't think so. I still like getting my bills and statements in the mail personally. So I don't really think so. And the only time that I will send something through a mail like a letter or parcel is when the recipient does not have an emailing address at the other end.

Technology is going to make it evolve, delivering everything via Internet in a secure mode, being used only for important documented, the rest by email or things like that.

Nope. Packages of course will still be sent around, but that will be handled by the private sector. The postal service is virtually already dead.

Well I hope not. If internet stops working for any reason, snail mail is the only way! Remember the Nuclear winter? We need Snail mail to hang around, hopefully forever...