export declare const generateVerifyCode: (codeLength?: number) => string;
export type EmailObject = {
    mailTo: string[];
    title: string;
    htmlContent: string;
};
export interface EMailClient {
    sendEmail: (emailObject: EmailObject) => Promise<any>;
}
export declare const setupEmailClient: (instance: EMailClient) => void;
export declare const getEmailClient: () => EMailClient;