Emailrobot is made up out of several components: The Emailrobot Task Manager, the Emailrobot itself, the Emailrobot Queue View, the Email Communications Viewer, the Emailrobot Connector, and the Mailbox Agent. The last two components, the Emailrobot connector and the mail box agent, are only installed with Emailrobot for Exchange.
Please find below an overview of the components for Emailrobot for Exchange and Emailrobot for SMTP.
Overview of the components of Emailrobot and their interaction with Microsoft Exchange server
Overview of the components of Emailrobot and their interaction with an SMTP server
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The Emailrobot Connector & Mailbox agent
The Email Communications Viewer