import * as plugins from '../plugins.js';
import type { SzPlatformClient } from '../classes.platformclient.js';
export declare class SzLetterConnector {
    platformClientRef: SzPlatformClient;
    constructor(platformClientRefArg: SzPlatformClient);
    sendLetter(optionsArg: plugins.servezoneInterfaces.platform.letter.IReq_SendLetter['request']): Promise<string | undefined>;
}