How to prove that the reply was delivered to the property?

This situation can be recorded by express delivery documents and mail tracking.

1. Express delivery document: If you send a reply by express delivery, you can save the express delivery document as a voucher. These files usually display recipient information, delivery date and delivery status.

2. Mail tracking record: Some courier companies provide mail tracking service, and you can check the shipping status and receipt of mail online. These records can be used as evidence that the reply has been delivered.