--- schema_version: "1" id: 33c4e8799ac3e5ab020de47d80f7e8aae1422bdc8f708a4e722d44b851636abe title: Messaging Namespace collection: legacydeveloper version: current locale: en-us portal_url: https://docs.salesforce.com/legacydeveloper/current/en-us/apexref/apex_namespace_Messaging.md canonical_url: https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_namespace_Messaging.htm source_site: developer.salesforce.com content_type: documentation content_hash: f3f97b7024d39b4b71e77f035b80341c48b53112f5ef80bbd9907ad092513373 description: The Messaging namespace provides classes and methods for Salesforce notifications and email functionality. --- # Messaging Namespace The Messaging namespace provides classes and methods for Salesforce notifications and email functionality. The Messaging namespace includes these classes, enums, and interfaces. - **[AttachmentRetrievalOption Enum](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_enum_Messaging_AttachmentRetrievalOptionEnum.htm)** Provides options for including attachment metadata only, attachment metadata and content, or excluding attachments. - **[ActionableNotification Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_Messaging_ActionableNotification.htm#apex_class_Messaging_ActionableNotification)** Contains information about an actionable custom notification. - **[ActionableNotification.Builder Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_Messaging_ActionableNotification_Builder.htm#apex_class_Messaging_ActionableNotification_Builder)** Contains methods to build an instance of the Messaging.ActionableNotification class, which is used to configure actionable notifications for mobile devices. - **[ActionError Enum](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_enum_Messaging_ActionError.htm)** Specifies the error that occurred during the execution of an actionable notification. - **[ActionResult Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_Messaging_ActionResult.htm#apex_class_Messaging_ActionResult)** Contains information about the execution of an actionable notification. - **[ActionResult.Builder Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_Messaging_ActionResult_Builder.htm#apex_class_Messaging_ActionResult_Builder)** Contains methods to build and validate an instance of the Messaging.ActionResult class. - **[CustomNotification Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_Messaging_CustomNotification.htm#apex_class_Messaging_CustomNotification)** CustomNotification is used to create, configure, and send custom notifications from Apex code. - **[Email Class (Base Email Methods)](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_classes_email_outbound_base.htm#apex_classes_email_outbound_base)** Contains base email methods common to both single and mass email. - **[EmailFileAttachment Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_classes_email_outbound_attachment.htm#apex_classes_email_outbound_attachment)** EmailFileAttachment is used in SingleEmailMessage to specify attachments passed in as part of the request, as opposed to existing documents in Salesforce. - **[InboundEmail Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_classes_email_inbound_inbound.htm#apex_classes_email_inbound_inbound)** Represents an inbound email object. - **[InboundEmail.AuthenticationResult Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_Messaging_InboundEmail_AuthenticationResult.htm#apex_class_Messaging_InboundEmail_AuthenticationResult)** Contains the authentication type and response for inbound emails. - **[InboundEmail.AuthenticationResultField Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_Messaging_InboundEmail_AuthenticationResultField.htm#apex_class_Messaging_InboundEmail_AuthenticationResultField)** Contains field data from the authentication result response for inbound emails. - **[InboundEmail.BinaryAttachment Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_classes_email_inbound_binary.htm#apex_classes_email_inbound_binary)** An InboundEmail object stores binary attachments in an InboundEmail.BinaryAttachment object. - **[InboundEmail.TextAttachment Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_classes_email_inbound_text.htm#apex_classes_inbound_text)** An InboundEmail object stores text attachments in an InboundEmail.TextAttachment object. - **[InboundEmailResult Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_classes_email_inbound_result.htm#apex_classes_email_inbound_result)** The InboundEmailResult object is used to return the result of the email service. If this object is null, the result is assumed to be successful. - **[InboundEnvelope Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_classes_email_inbound_envelope.htm#apex_classes_email_inbound_envelope)** The InboundEnvelope object stores the envelope information associated with the inbound email, and has the following fields. - **[MassEmailMessage Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_classes_email_outbound_mass.htm#apex_classes_email_outbound_mass)** Contains methods for sending mass email. - **[InboundEmail.Header Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_classes_email_inbound_header.htm#apex_classes_email_inbound_header)** An InboundEmail object stores RFC 2822 email header information in an InboundEmail.Header object with the following properties. - **[PushNotification Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_classes_push_notification.htm)** PushNotification is used to configure push notifications and send them from an Apex trigger. - **[PushNotificationPayload Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_classes_push_notification_payload.htm)** Contains methods to create the notification message payload for an Apple device. - **[NotificationActionHandler Interface](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_interface_Messaging_NotificationActionHandler.htm#apex_interface_Messaging_NotificationActionHandler)** Implement this interface to execute an action on a custom notification. - **[RenderEmailTemplateBodyResult Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_Messaging_RenderEmailTemplateBodyResult.htm#apex_class_Messaging_RenderEmailTemplateBodyResult)** Contains the results for rendering email templates. - **[RenderEmailTemplateError Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_class_Messaging_RenderEmailTemplateError.htm#apex_class_Messaging_RenderEmailTemplateError)** Represents an error that the RenderEmailTemplateBodyResult object can contain. - **[SendEmailError Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_classes_email_outbound_sendemailerror.htm#apex_classes_email_outbound_sendemailerror)** Represents an error that the SendEmailResult object may contain. - **[SendEmailResult Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_classes_email_outbound_sendemailresult.htm#apex_classes_email_outbound_sendemailresult)** Contains the result of sending an email message. - **[SingleEmailMessage Class](https://developer.salesforce.com/docs/atlas.en-us.apexref.meta/apexref/apex_classes_email_outbound_single.htm#apex_classes_outbound_single)** Contains methods for sending single email messages.