export declare function buildZoomRegistrantEmail(email: string, registrationId: number): string;
export declare function buildZoomUserRegistrantEmail(email: string, userId: number, programId: number): string;
export declare function buildZoomPlaceholderRegistrantEmail(slug: string, domain: string, sequenceNumber: number, programId: number): string;
export declare function parseZoomRegistrantRegistrationId(email: string | null | undefined): number | null;