Amazon Pinpoint Email Message Activity Structure

{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/amazon-pinpoint/refs/heads/main/json-structure/amazon-pinpoint-email-message-activity-structure.json",
  "name": "EmailMessageActivity",
  "description": "Specifies the settings for an email activity in a journey. This type of activity sends an email message to participants.",
  "type": "object",
  "properties": {
    "MessageConfig": {
      "allOf": [
        {
          "$ref": "#/components/schemas/JourneyEmailMessage"
        },
        {
          "description": "Specifies the sender address for an email message that's sent to participants in the journey."
        }
      ]
    },
    "NextActivity": {
      "allOf": [
        {
          "$ref": "#/components/schemas/__string"
        },
        {
          "description": "The unique identifier for the next activity to perform, after the message is sent."
        }
      ]
    },
    "TemplateName": {
      "allOf": [
        {
          "$ref": "#/components/schemas/__string"
        },
        {
          "description": "The name of the email message template to use for the message. If specified, this value must match the name of an existing message template."
        }
      ]
    },
    "TemplateVersion": {
      "allOf": [
        {
          "$ref": "#/components/schemas/__string"
        },
        {
          "description": "<p>The unique identifier for the version of the email template to use for the message. If specified, this value must match the identifier for an existing template version. To retrieve a list of versions and version identifiers for a template, use the <link  linkend=\"templates-template-name-template-type-versions\">Template Versions</link> resource.</p> <p>If you don't specify a value for this property, Amazon Pinpoint uses the <i>active version</i> of the template. The <i>active version</i> is typically the version of a template that's been most recently reviewed and approved for use, depending on your workflow. It isn't necessarily the latest version of a template.</p>"
        }
      ]
    }
  }
}