http://jetpack.me/support/post-by-email/
There’s a set of plugins that WP provides in a suite called JetPack. We have this suite activated on PSA.org, but to use the post by email function, which we may wish to experiment with, it seems each user must set it up for their own user acct. This link is to the Jetpack at WP.com which is connected in the background to WP.org.
The link above is a “how to”…
Clearly this is another trial and error situation… but could be convenient in some instances for posting with mobile or for other reasons.