import type NodeMailerTransport from 'nodemailer/lib/json-transport/index.js';
import { MailResponse } from '../mail_response.js';
import type { MailTransportContract, NodeMailerMessage } from '../types.js';
/**
 * JSON transport returns the mail message as a JSON object
 */
export declare class JSONTransport implements MailTransportContract {
    #private;
    /**
     * Send message
     */
    send(message: NodeMailerMessage): Promise<MailResponse<NodeMailerTransport.SentMessageInfo>>;
}