export interface MailMessage {
    filename: string;
    body: string;
    receivedAt: Date;
}
/**
 * Maildir-compatible mail client.
 * Reads from mailDir/inbox/new and moves processed messages to mailDir/inbox/cur.
 * Writes outgoing mail to mailDir/outbox/new.
 */
export declare class MailClient {
    readonly mailDir: string;
    private inboxNew;
    private inboxCur;
    private outboxNew;
    constructor(mailDir: string);
    /** Return all messages in inbox/new and move them to inbox/cur. */
    checkNewMail(): Promise<MailMessage[]>;
    /** Write a message to outbox/new for relay delivery. */
    sendMail(to: string, body: string): Promise<void>;
}
//# sourceMappingURL=mail.d.ts.map