import nodemailer from 'nodemailer';
import type SMTPTransport from 'nodemailer/lib/smtp-transport/index.js';
import { AbstractMailHandler } from '@cedarjs/mailer-core';
import type { MailRenderedContent, MailResult, MailSendOptionsComplete } from '@cedarjs/mailer-core';
export type HandlerConfig = {
    transport: SMTPTransport | SMTPTransport.Options | string;
    defaults?: SMTPTransport.Options;
};
export type HandlerOptions = nodemailer.SendMailOptions;
export declare class NodemailerMailHandler extends AbstractMailHandler {
    protected config: HandlerConfig;
    protected transporter: nodemailer.Transporter;
    constructor(config: HandlerConfig);
    send(renderedContent: MailRenderedContent, sendOptions: MailSendOptionsComplete, handlerOptions?: HandlerOptions): Promise<MailResult>;
    internal(): {
        config: HandlerConfig;
        transporter: nodemailer.Transporter<any, nodemailer.TransportOptions>;
    };
}
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