| ET_Asset | An asset is an instance of any kind of content in the CMS. |
| ET_BaseObject | This class represents the base object for SOAP operation. |
| ET_BaseObjectRest | This class represents the base object for REST operation. |
| ET_BounceEvent | Contains information pertaining to the specific event of an email message bounce. |
| ET_Campaign | Represents a program in an account |
| ET_Campaign_Asset | Represents an asset associated with a campaign. |
| ET_ClickEvent | Represents ClickEvent Class. |
| ET_Client | Defines a Client interface class which manages the authentication process. |
| ET_Configure | This class represents configurations required for SOAP operation. |
| ET_Constructor | This class represents the contructor for all web service (SOAP/REST) operation and holds HTTP status code, response, result, etc. |
| ET_ContentArea | ET_ContentArea - Represents a ContentArea class. |
| ET_Continue | This class represents ContinueRequest for SOAP operation. |
| ET_CUDSupport | This class represents the create, update, delete operation for SOAP service. |
| ET_CUDSupportRest | This class represents the create, update, delete operation for REST service. |
| ET_CUDWithUpsertSupport | This class represents the put operation for SOAP service. |
| ET_DataExtension | ETDataExtension - Represents a data extension within an account. |
| ET_DataExtension_Column | ETDataExtensionColumn - Represents Data Extension Field. |
| ET_DataExtension_Row | ETDataExtensionRow - Represents Data Extension Row. |
| ET_DataExtractActivity | This class represents the get operation for SOAP service. |
| ET_Delete | This class represents the DELETE operation for SOAP service. |
| ET_DeleteRest | This class represents the DELETE operation for REST service. |
| ET_Email | ET_Email - Represents an email in a Marketing Cloud account. |
| ET_Email_SendDefinition | This class contains the message information, sender profile, delivery profile, and audience information. |
| ET_ExtractDescription | Contains information about the opening of a message send by a subscriber. |
| ET_Folder | This class represents a folder in a Marketing Cloud account. |
| ET_Get | This class represents the GET operation for SOAP service. |
| ET_GetRest | This class represents the GET operation for REST service. |
| ET_GetSupport | This class represents the get operation for SOAP service. |
| ET_GetSupportRest | This class represents the get operation for REST service. |
| ET_Import | This class defines a reusable pattern of import options. |
| ET_Info | This class Provides info about a object like Campaign, Asset, DataExtension, etc. |
| ET_List | This class represents a marketing list of subscribers. |
| ET_List_Subscriber | The class retrieves subscribers for a list or lists for a subscriber. |
| ET_Message_Guide | The class can get, convert, render, send messages. |
| ET_OEM_Client | The class can create and retrieve specific tenant. |
| ET_OpenEvent | Contains information about the opening of a message send by a subscriber. |
| ET_Organization | This class represents an Account. |
| ET_Patch | This class represents the PATCH operation for SOAP service. |
| ET_PatchRest | This class represents the PATCH operation for REST service. |
| ET_Perform | This class represents the PERFORM operation for SOAP service. |
| ET_PerformExtract | This class represents the PERFORM operation for SOAP service. |
| ET_Post | This class represents the POST operation for SOAP service. |
| ET_PostRest | This class represents the POST operation for REST service. |
| ET_ProfileAttribute | This class defines any additional attribute for a subscriber. |
| ET_PutRest | This class represents the PUT operation for REST service. |
| ET_ResultMessage | Contains information regarding a specific unsubscription action taken by a subscriber. |
| ET_Send | Used to send email and retrieve aggregate data based on a JobID. |
| ET_SentEvent | Contains tracking data related to a send, including information on individual subscribers. |
| ET_Subscriber | A person subscribed to receive email or SMS communication. |
| ET_TriggeredSend | Defines a triggered send in the account. |
| ET_TriggeredSendSummary | Defines a triggered send in the account. |
| ET_UnsubEvent | Contains information regarding a specific unsubscription action taken by a subscriber. |
| ET_User | This class represents an Account User. |
| ET_Util | This utility class performs all the REST operation over CURL. |