It will be wonderful for you to create a Private Box feature. Having certain messages pinned, are those that are desired to be private. Due to the ease of 4 digit passcodes being decoded, I suggest a 6 -8 digit to be passcode should be required to open the Private Box. I discovered that many more customers are requesting this feature as well, so on behalf of all of us, we would appreciate the creation of the Private Box feature. Thank you