Arlo|Smart Home Security|Wireless HD Security Cameras

How about a wifi arlo device without a camera, but a microswitch interface.

How about a wifi arlo device without a camera, but a microswitch interface.
Would like to be able to include a connecton to a microswitch I can put on my mailbox door so that i can get notified when i have mail delivered. simply sends" You got mail " as an notification. My mailbox sits  by the street, and  we never know when its delivered.
Also if anyone knows a "hack" to convert the sound input to a microswitch input, I would be interested in experimenting.
Frankkop..   Located in North Carolina.