Something like a verb that allows all players to click it, type something, and when they press "ok", it gets sent to a specific E:Mail address. Any ideas?
-.- Comon - BUMP
Get a linux server and make it run the sendmail command.
In response to Scoobert
If you know any website programming, you can set up a CGI script that sends email, and use world.Export()'s HTTP functionality (look up Export proc (world), there's an example there) to trigger the CGI script and send it the required details (recipient, subject, message, and so on).

IM would be trickier, but depending on the protocol you might be able to rig something up. IIRC there is at least one IM service that provides a web interface; you might be able to hook into that.