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

/**
 * Configuration options for the ProtonMailProvider.
 */
type ProtonMailProviderConfig = {
    /** ProtonMail Bridge host (default: 127.0.0.1) */
    bridge_host?: string;
    /** ProtonMail Bridge port (default: 1025) */
    bridge_port?: number;
    /** ProtonMail username */
    username: string;
    /** ProtonMail password */
    password: string;
    /** Default sender email address */
    default_from: string;
    /** Whether to verify SSL certificates (default: false for Bridge) */
    reject_unauthorized?: boolean;
};
/**
 * Mailer provider that sends emails via ProtonMail Bridge SMTP.
 * Requires ProtonMail Bridge to be installed and running locally.
 * @see https://proton.me/mail/bridge
 */
declare class ProtonMailProvider implements MailerProvider {
    private defaultFrom;
    private transporter;
    private static nodemailerModule;
    /**
     * Creates a new ProtonMailProvider instance.
     * @param options - Provider configuration options
     */
    constructor(options?: Partial<ProtonMailProviderConfig>);
    /**
     * Sets the default sender email address.
     * @param from - The default sender email address
     */
    setDefaultFrom(from: string): void;
    /**
     * Sends an email via ProtonMail Bridge SMTP.
     * @param mail - The email message to send
     */
    sendMail(mail: Mailable): Promise<void>;
}

export { ProtonMailProvider, type ProtonMailProviderConfig };