Nails mailed

A clever play on words!

"Nails mailed" could be interpreted in a few ways:

1. A literal interpretation: Someone has sent nails through the mail, perhaps as a package or a gift.
2. A figurative interpretation: "Nails" could refer to the idea of something being "nailed down" or firmly established, and "mailed" could mean to confirm or finalize. In this sense, "nails mailed" might mean that something has been officially confirmed or sealed.
3. A humorous interpretation: "Nails mailed" could be a playful way of saying that someone has sent a package with a lot of "nails" (as in, a lot of effort or energy) to get it delivered.

Which interpretation do you think fits best?