Registered mail or certified mail

Both registered mail and certified mail are types of mail services that provide proof of mailing and delivery, but they have some differences:

Registered Mail:

• Also known as "registered airmail" or "registered surface mail"
• Provides proof of mailing and delivery
• Requires the sender to sign a receipt upon delivery
• The recipient must sign for the mail upon delivery
• The sender receives a receipt with a unique tracking number
• The mail is tracked and insured for a certain amount (usually up to a certain value, e.g., $100)
• The sender can request compensation if the mail is lost, damaged, or not delivered

Certified Mail:

• Also known as "certified airmail" or "certified surface mail"
• Provides proof of mailing and delivery
• Requires the sender to sign a receipt upon mailing
• The recipient does not have to sign for the mail upon delivery (but can if they choose to)
• The sender receives a receipt with a unique tracking number
• The mail is not insured, but the sender can purchase additional insurance coverage
• The sender can request compensation if the mail is lost, damaged, or not delivered

Key differences:

• Registered mail requires the recipient to sign for the mail upon delivery, while certified mail does not.
• Registered mail is insured for a certain amount, while certified mail is not (although additional insurance can be purchased).
• Registered mail is typically used for more valuable or important items, while certified mail is used for less valuable or routine correspondence.

In summary, if you need to send a valuable or important item and want to ensure it's delivered and tracked, registered mail might be the better choice. If you're sending a less valuable item and just want proof of mailing and delivery, certified mail could be sufficient.