How to get the receiver to be notified by phone when sending a letter?

Ordinary mail and postcards will not be notified, and some registered letters will be notified by phone or SMS. Some places have not been noticed.

You don't need the contact number of the recipient, just the postal code, address and name of the recipient.

But it's easy to lose letters now. It is recommended to send it by registered mail, preferably by express mail.

If it is not a paper document, you can send an electronic document or a scanned copy to the other party by email.