HTML emails

This may very well turn out to be my dumbest post yet but…

How can I send out a decent html email? (like a good looking newsletter) I haven’t looked into it much but I thought I’d ask the forum for any tips. I’m guessing you can’t do it through MS Outlook; least when I looked there didn’t seem to be option to edit the html source. Do you have to use a separate program or even better is there a plug in? (it won’t be a mass mailing type affair)

Anyone got any advice?

Cheers!
:bandit: