export type ProviderKind = 'mailbox-domain' | 'mailbox-platform' | 'security-gateway' | 'transactional-ingress';
export declare function getProviderKind(name: string): ProviderKind;
/** Only human mailbox kinds may surface webmail/login URLs in responses
 *  or public helpers. Gateways and transactional ingress never do —
 *  a quarantine or account console is not webmail. */
export declare function isHumanMailboxKind(name: string): boolean;