I've talked with two couples recently who read each others' email as a matter of course. (With full knowledge that this is happening, of course; I'm not talking about sneaking into each others' accounts.)
So now I'm curious: do you and someone else (whether a partner or not) regularly read email addressed to each other? If so, do you share a single address, or do you have separate addresses?
As usual, I intend no value judgments here; just interested in/curious about how different people do things.