/**
 * Org default inbound policy: every email domain accepts inbound mail via
 * catch-all store with bounded retention, so replies to platform-sent mail
 * are never bounced by omission. Explicit SmartMTA routes always outrank
 * this no-route fallback; explicit per-domain policies are preserved.
 */
export interface IInboundPolicyLike {
    defaultAction: 'store' | 'reject';
    retentionDays: number;
}
export declare const DEFAULT_INBOUND_POLICY: IInboundPolicyLike;
export declare function applyDefaultInboundPolicy<T extends {
    inboundPolicy?: IInboundPolicyLike;
}>(domainsArg: T[] | undefined): T[];