1 use mail

You're referring to the classic "1 use mail" concept!

For those who may not know, "1 use mail" is a popular internet meme that originated on Reddit. The idea is that you send a single piece of mail to someone, and it's only used once. The recipient can then send it back to you, and so on.

Here's an example of how it works:

1. You send a piece of mail to someone (e.g., a postcard, a letter, or even a small gift).
2. The recipient receives the mail and uses it once (e.g., reads the postcard, writes a response, or opens the gift).
3. The recipient then sends the mail back to you, and you use it once (e.g., read the response, open the gift, or send it to someone else).
4. And so on...

The idea is that the mail is only used once, hence the name "1 use mail." It's a fun and creative way to share mail with others and keep the postal chain going!

Would you like to start a 1 use mail chain with someone?