I usually send letters back with friends, but I had some important mail to send and no friends going back anytime soon, so decided to bite the bullet and go to the post office in POP. Plus, I heard some pretty good reviews here about the service with tracking. What I never saw mentioned is that it costs 2000 pesos per letter and takes one week for delivery. Regular mail is 200 pesos and I was told one to one and a half months for delivery. The post office is open until 2;30pm.