mail2m (Mail 2 Many) is a tiny simple bulk mail sender, designed to send a simple html mail to a group of friends. Recipients list can contain up to 200 (and more ?) recipients. No database and only basic smtp configuration is needed.
jmailto is a tiny Java Applet which can be used to replace HTML's native "mailto:" tag. It aims to prevent Spam bots and harvesters from automatically collect (your) E-Mail addresses by searching the HTML source code of your page.