The Case of Spam Filtering

Published: Nov. 25, 2014, 3:09 a.m.

Reading someone else's email, is it ever permissible? What if it is done for the purpose of a mitzvah or to check up on a child out of concern for his/her well being?
Can you read someone else's note which was placed in the Kotel?
Is it permissible to set up a hidden camera to ensure that employees do not steal?