Hello @KishorMali
In any system, there are always some superusers who can access anything when the need comes.
That’s required to maintain the integrity of the content.
Since we are using “https”, communication remains encrypted during transport.
As per my understanding, no superuser will look into a PM unless flagged.
But then, I do not find any need private messaging as you can communicate everything through a regular post or comment except for any sensitive personal information.
Private messages are private for definition, @KishorMali
A private message can be read by the sender and the receiver.
BTW, of course, there is an option for Reporting a Private message. Why? Because Reporting you “unlock” the message, giving in this way the permission to the owner of the platform (represented here by the Google Moderators) to read the message.
I know this by personal experience, as I had the need to report a Local Guide who was sending me inappropriate messages, and a Googler asked me to “report the message” for them to be able to access it