As users register to my site I will be taking their emails for obvious reasons but I also will want to send them announcements and important information from time to time. I'm wondering whether I can somehow build this into my admin site? So for instance is there a way I can get all emails from my users and then send a message that I have typed in to them??? Or is it better to stick to using pre-made mailing lists? I just think it is both easier to do it all from the backend, although I may be wrong... what's your ideas on this?