import nodemailer from 'nodemailer';
import { Mailable } from '../Mailable.mjs';
import { MailerProvider } from '../MailerProvider.mjs';

/**
 * Configuration options for the SMTPProvider.
 */
type SMTPProviderConfig = {
    /** Nodemailer transport options for SMTP configuration */
    nodemailer_options: nodemailer.TransportOptions;
    /** Default sender email address */
    default_from: string;
};
/**
 * Mailer provider that sends emails via SMTP using nodemailer.
 * Supports standard SMTP server configuration.
 */
declare class SMTPProvider implements MailerProvider {
    private defaultFrom;
    private transporter;
    private static nodemailerModule;
    /**
     * Creates a new SMTPProvider instance.
     * @param options - Provider configuration options
     */
    constructor(options?: Partial<SMTPProviderConfig>);
    /**
     * Sets the default sender email address.
     * @param from - The default sender email address
     */
    setDefaultFrom(from: string): void;
    /**
     * Sends an email via SMTP.
     * @param mail - The email message to send
     */
    sendMail(mail: Mailable): Promise<void>;
}

export { SMTPProvider, type SMTPProviderConfig };