The SMTP Tool is used to create a Task Step that triggers a Task to run based on the contents of incoming or outgoing mail sent via a virtual SMTP Mail Server.
When an email is received it is compared against a number of filters created in the Step which define values for the message parameters. Where all filter requirements are met the message is utilised to trigger a Task to run. On receipt, each of the email parameters is exposed and their values may be mapped to variables created for the Task and then used in other Steps.