On Sat, 13 Feb 2010 01:58:15 -0500, wrote:

[snip]

Use a microswitch on the door

If the box is metal, it could become the contact plate for an
electronic touch switch.

to trigger n electronic "latching relay"
to turn on an LED every time the door is opened. A push-button to
reset it after you take OUT the mail.
--
Mark Lloyd
http://notstupid.us

"How could you ask me to believe in God when there's
absolutely no evidence that I can see?" -- Jodie Foster