import { TbxEmailInfo } from "./email-info";
import { TbxFetch } from "../fetch/fetch";
import { TbxUrlService } from "../services/url/url.service";
import { TbxLogService } from "../logging/service/log.service";
export declare class TbxEmailService {
    private readonly fetch;
    private readonly urlService;
    private readonly logService;
    private static singleInstance;
    constructor(fetch: TbxFetch, urlService: TbxUrlService, logService: TbxLogService);
    static readonly instance: TbxEmailService;
    send(email: TbxEmailInfo): Promise<boolean>;
    sendEmail(to: string, subject: string, body?: string, cc?: string, bcc?: string): Promise<boolean>;
    private doSendEmail;
}