Windows Tools for Sending Mail Fast
Sometimes, all you need to do is send a fast email — fast. So fast, in fact, that your normal email program cannot keep up. There are dedicated Windows tools focused on the sole purpose of getting a simple message out. Find them reviewed here.
Karen's E-Mailer II
Karen's E-Mailer II is a simple and useful mailer that lets you define messages and send them flexibly from scripts, for example.
Minimail
Minimail is a tiny, fast and quite useful tool for the quick email sent in between.
SpeedMail
SpeedMail is the perfect tool for sending short emails quickly with its tiny size and high speed.