Before you can send emails with ColdFusion, a mail server you want to use needs to be set. Configuring the mail server can be done in the ColdFusion Administrator.
If you do not have a mail server of your own, your localhost can act as a mail server. ColdFusion will act normally, but since there is no mail server set up on your localhost, emails will not arrive at their destination. Another option is to use the mail server of Gmail (a Gmail account is required for this). The settings for this mail server can be found at the end of this section.