How Many People Still Use Their P.O.Box Or PMB In Recent Times?

please, i would want to know how many people who work online still have time to check their mail boxes at their respective post-offices, or the purpose of the post-office is no longer relevant given the penetration of low-speed internet in nigeria. i still own and periodically check my post-office box, but how many people still do so and still believe they can receive something tangible in their post-office boxes.

really?