Another thought. Suppose instead of a MESH network maintained by Postman-like Elmers and Apprentices, suppose this. Imagine an inner-directed Signal Corps of electromagnetic Johhny Appleseeds. They'd plant mini net nodes like geo caches here and there and everywhere, accessible by cellphones with minimal hacking. Such a network might be readily shut down, but sheer numbers might overwhelm any effective suppressive attempts, such that by hook or crook, the email got through. Again, I don't know enough about how cellphones work to guess how easy they'd be to repurpose, or how much autonomous, self-powered intelligence could be cheaply jammed into, say, a ping pong ball sized container. Short of cloned biologic radios with chlorophyl-based energy transverterting skins, might not be so easy to match the economical elegance of apple seeds. Still, people are clever. I might not bet on a lot of human endevors, this kind of stuff is what some of us routinely do.