Hello.

I've read through a few of the posts about mail to the Philippines, but I wanted to clarify something.
There's mention that a visit to the post office is necessary in Philippines for the collection of mail.

Is this just for mail that requires a signature? Or all international mail?

I've posted 3 postcards, none of them have arrived. One was from Bohol, one from Singapore and one from England.
I'm going to try an international signed for letter next and wanted to know this detail.

Thank you all for your time and knowledge.