What is the safest way to send valuables through the mail?

The safest way to send valuables through the mail is to use a reputable courier service that offers tracking and insurance options. Ensure the items are securely packaged in a sturdy box, and consider using tamper-evident materials. Always declare the value of the items and opt for signature confirmation upon delivery to ensure they reach the intended recipient safely. Additionally, avoid revealing the contents on the outside of the package to prevent theft.