/// <reference types="node" />
import { Transporter, SentMessageInfo } from 'nodemailer';
import { Url } from 'url';
import { AddQueueModelAttributes, NsqMailQueue } from './QueueModel';
export default class Mailer implements IMailer {
    private transporter;
    constructor(defaults?: any, transport?: Transporter);
    sendMail(message: Message): Promise<SentMessageInfo>;
    composeMailFromModel(mail: NsqMailQueue | AddQueueModelAttributes): Message;
}
export interface IMailer {
    sendMail(message: Message): Promise<SentMessageInfo>;
    composeMailFromModel(mail: NsqMailQueue): Message;
}
export interface Attachment {
    /** filename to be reported as the name of the attached file, use of unicode is allowed. If you do not want to use a filename, set this value as false, otherwise a filename is generated automatically */
    filename?: string | false;
    /** path to a file or an URL (data uris are allowed as well) if you want to stream the file instead of including it (better for larger attachments) */
    path?: string | Url;
    url?: string | Url;
}
export declare type Message = {
    from: string;
    to: string;
    subject: string;
    html: string;
    attachments?: Attachment[];
};