Post stamped marked mail

You're referring to "Postage Paid" or "PP" markings on mail!

The "Postage Paid" marking is a notation used by postal services to indicate that the postage has been paid by the sender, rather than the recipient. This marking is usually found on envelopes, packages, and other mail items that have been sent with pre-paid postage.

Here are some common types of "Postage Paid" markings:

1. Postage Paid: This is the most common marking, which indicates that the postage has been paid by the sender.
2. PP: This is a shorter version of the "Postage Paid" marking, often used on international mail.
3. Paid: This marking is used to indicate that the postage has been paid, but it may not specify who paid the postage.
4. Prepaid: This marking indicates that the postage has been paid in advance, often by the sender.

The "Postage Paid" marking serves several purposes:

1. Clearance: It helps customs and postal officials quickly identify mail that has been pre-paid, making it easier to clear through customs and deliver to the recipient.
2. Tracking: The marking can help track the mail item's journey and ensure that it is delivered to the correct recipient.
3. Proof of payment: The "Postage Paid" marking serves as proof that the postage has been paid, which can be useful in case of disputes or issues with delivery.

Overall, the "Postage Paid" marking is an important part of the mail processing and delivery system, helping to ensure that mail is delivered efficiently and effectively.