Track Activities is a required Salesforce setting for the object you want to send an email from.
Parameters
CETFilterspecifies the where clause to filter the list of Conga Email Templates that display in the user interface.
CongaEmailTemplateGroupfilters the list of Conga Email Templates that appear in the Email Templates list on the Composer user interface to those that match the specified criteria.
CongaEmailTemplateIdpre-selects the Conga Email Template specified in the Email Templates list on the Composer user interface.
DS10disables the Attach File button in the Conga Email Editor.