Think about this for a minute......how many FREE email servers are there?
Why are they free? because of the ads on there.....revenue.  OK...so how
would they ever charge for each message and such?  By charging for per
login? nope....they would lose subscribers.  Charge for ISP access?
Nope....libraries have it as well.

So..plain and simple....even if they wanted to....it would never work.