Once a message is within the central email system it can be seen by administrators or anyone who has access to it on a network provider level. (inc.com)
I do have another option that I'm researching that definitely is private and I'm trying to get access to it for readers. (wellnessmama.com)
The easiest access to them as far as I can tell is from inside the van, they come in to the right of the gas pedal. (mechanics.stackexchange.com)