import { Activity, Entity } from '@microsoft/agents-activity';
/**
 * Represents an email response entity to be sent back.
 */
export interface EmailResponse extends Entity {
    /**
     * The type of the entity. Always 'emailResponse'.
     */
    type: 'emailResponse';
    /**
     * The HTML body content of the email response.
     */
    htmlBody?: string;
}
/**
 * The entity type name for email responses.
 */
export declare const EMAIL_RESPONSE_TYPE = "emailResponse";
/**
 * Factory function to create an EmailResponse entity.
 */
export declare function createEmailResponse(htmlBody?: string): EmailResponse;
/**
 * Creates an activity with an EmailResponse entity
 * @param emailResponseHtmlBody - (Optional) The HTML body content for the email response
 * @returns A message activity containing the EmailResponse entity
 */
export declare function createEmailResponseActivity(emailResponseHtmlBody?: string): Activity;
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