Calling controllers from controllers

[eluser]Iverson[/eluser]
I know a lot of people are against this idea and libraries that do it ie. Wick. I think it's of great use but I can understand the complaint, so I'm looking for others' ideas on how to make what I wanna do work. I have a bunch of different controllers. Quite a few of them need to send out notifications. A bunch of the controllers' methods will need to send out the same notification. It would be great to have one controller that handled sending emails. Naturally I don't want to have to add all the email functions in all those different controllers. Ideas?