import { ConfigService } from '@nestjs/config';
import type { AppConfig } from '../config/configuration';
export interface MailchimpSubscribeResult {
    alreadySubscribed: boolean;
}
export declare class MailchimpClient {
    private readonly apiKey;
    private readonly audienceId;
    private readonly server;
    constructor(configService: ConfigService<AppConfig, true>);
    subscribe(email: string): Promise<MailchimpSubscribeResult>;
}