{"command":{"effect":"write","timeoutSeconds":30,"inputSchema":{"type":"object","description":"**This endpoint allows you to update your current legacy email template settings.**\n\nThis setting refers to our original email templates. We currently support more fully featured [Dynamic Transactional Templates](https://sendgrid.com/docs/ui/sending-email/how-to-send-an-email-with-dynamic-transactional-templates/).\n\nThe legacy email template setting wraps an HTML template around your email content. This can be useful for sending out marketing email and/or other HTML formatted messages. For instructions on using legacy templates, see how to [\"Create and Edit Legacy Transactional Templates](https://sendgrid.com/docs/ui/sending-email/create-and-edit-legacy-transactional-templates/). For help migrating to our current template system, see [\"Migrating from Legacy Templates\"](https://sendgrid.com/docs/ui/sending-email/migrating-from-legacy-templates/).","properties":{"headers":{"type":"object","properties":{"on-behalf-of":{"type":"string","description":"The `on-behalf-of` header allows you to make API calls from a parent account on behalf of the parent's Subusers or customer accounts. You will use the parent account's API key when using this header. When making a call on behalf of a customer account, the property value should be \"account-id\" followed by the customer account's ID (e.g., `on-behalf-of: account-id <account-id>`). When making a call on behalf of a Subuser, the property value should be the Subuser's username (e.g., `on-behalf-of: <subuser-username>`). See [**On Behalf Of**](https://docs.sendgrid.com/api-reference/how-to-use-the-sendgrid-v3-api/on-behalf-of) for more information."}},"required":[],"additionalProperties":false},"body":{"type":"object","properties":{"enabled":{"type":"boolean","description":"Indicates if you want to enable the legacy email template mail setting."},"html_content":{"type":"string","description":"The new HTML content for your legacy email template."}},"examples":[{"enabled":true,"html_content":"<% body %>"}]}},"required":[],"additionalProperties":false},"name":"Update template mail settings","id":"sendgrid.mail_settings.updatetemplate","example":{},"maxRequests":1,"summary":false}}