import { IEmailService, OnSendMailError, OnSendMailSuccess } from "./IEmailService";
export declare class EmailService implements IEmailService {
    private isInit;
    private sendGridApiKey;
    private fromEmail;
    private needSetup;
    init(sendGridApiKey: string, fromEmail: string): void;
    run(): void;
    sendMail(toEmail: string, subject: string, contentHtml: string, onSendMailSuccess?: OnSendMailSuccess, onSendMailError?: OnSendMailError): Promise<void>;
    sendMailToMore(toEmails: string[], subject: string, contentHtml: string, onSendMailSuccess?: OnSendMailSuccess, onSendMailError?: OnSendMailError): Promise<void>;
}