mailbox money
n.— «The recurring revenue SCR earns as a result of switching its clients to Mercury is what Milligan refers to as “mailbox money.” That is, once a client is switched over, SCR receives a monthly residual check from Mercury based on the card processing activity of the customer. All Milligan has to do is walk to the mailbox.» —“3 Steps to Increased POS Sales” by Mike Monocello Business Solutions Aug., 2007. (source: Double-Tongued Dictionary)
Further reading
Astronauts returning from space say they experience what’s called the overview effect, a new understanding of the fragility of our planet and our need to reflect on what humans all share as a species. A book about the end of the universe...
When you had sleepovers as a child, what did you call the makeshift beds you made on the floor? In some places, you call those bedclothes and blankets a pallet. This word comes from an old term for “straw.” And: What’s the story...