Here is a problem: You use ColdFusion to generate email. You are testing on your laptop, or other development machine, and the email doesn't actually go anywhere. To read the mail you need to dig down to ColdFusion's undelivered mail folder, find the right text file, open it up, and even then what you see is a bit messy.
SpoolMail is the solution. SpoolMail is simply a HotMail/Gmail/etc web based reader for the email in your undelivered folder. Along with reading the mail, you can delete the mail or move it back into the spool.