Many of the example processes in this document use a Dialog Workflow component to present a webform to a user. This is most often done by sending the user an email with a link to the webform.
Dialog Workflow components stop a process to present a Web dialog to a user to obtain necessary information.
See About the Dialog Workflow component
With a Dialog Workflow component, before the user can input the necessary information in the Web dialog, the user must first access the dialog. Dialog Workflow components contain a start process for the purpose of presenting the user with the Web dialog. One common way of doing this is sending the user an email with a link to the Web dialog. The Send Email component sends the email.
To present a dialog to a user with the Send Email component