import { AllSiteSettingsCached } from "@cocalc/util/db-schema/types";
export declare function escape_email_body(body: string, allow_urls: boolean): string;
interface InviteOpts {
    to: string;
    subject: string;
    email: string;
    email_address: string;
    title: string;
    settings: AllSiteSettingsCached;
    allow_urls: boolean;
    link2proj?: string;
    replyto: string;
    replyto_name: string;
    cb: (err?: any, msg?: any) => void;
}
export declare function send_invite_email(opts: InviteOpts): void;
export declare function is_banned(address: any): boolean;
interface Opts {
    subject: string;
    body: string;
    fromname?: string;
    from?: string;
    to: string;
    replyto?: string;
    replyto_name?: string;
    cc?: string;
    bcc?: string;
    verbose?: boolean;
    category?: string;
    asm_group?: number;
    settings: AllSiteSettingsCached;
    url?: string;
    company_name?: string;
    cb?: (err?: any, msg?: any) => void;
}
export declare function send_email(opts: Opts): Promise<void>;
export declare function mass_email(opts: any): void;
export declare function welcome_email(opts: any): void;
export declare function email_verified_successfully(url: any): string;
export declare function email_verification_problem(url: any, problem: any): string;
export {};