The E-Mail BIC provides the capability to generate e-mails from an EPX workflow by connecting to an E-mail server.
In a new Enable installation (with the Services Framework installed), the Scheduled Imports, Scheduled Exports, and Email Notification Process workflows include the Email BIC activity. Any additional workflow should use the Send Email Callout BIC to send e-mails. The reason for this is because there are a lot of settings required in the Email BIC that would have to be configured in each workflow that uses it. The Send Email Callout BIC simply requires the basic information (such as From Address, To Address, Subject, Body, and Attachments) and does not require any Email-server specific configuration since it routes the e-mail requests through the Email Notification Process Workflow.