What they mean is overnight mail by a private carrier.

After all, in the age of private overnight mail, why not private jails?

Indian Rock sells to the public via overnight mail; what's available, and how much it costs, changes daily.

Ms. Rankin sent a money order for $125 to the seller by overnight mail.

First, a passel of background papers comes by overnight mail.

When the tickets arrived by overnight mail, I discovered another $4 "service fee" for each ticket.

Ten years ago, photos of missing children had to be sent by overnight mail to the center's headquarters outside Washington.

He's got your address and is sending the packet by overnight mail.

A more modern, reasonable provision would also allow service by hand delivery or overnight mail.

At the same time, it sends a form by overnight mail to the first surgeon.