We can, and should, do our own local Email.
Yes -- per host, e.g. k7ve@k7ve.ampr.org. If ampr.net wanted to host everyone, e.g. k7ve@ampr.org then Google offers their Google Apps to non-profits, but you would need an admin team.
I'm only thinking of the local per host case. At one time there may have been an opportunity for a greater organization but there's probably no real need today. We've also already have winlink and gmail...
It's the standalone services hosted locally that are unique and special...
Bill, WA7NWP