import type { Settings } from "@opengeni/config";
import type { ManagedEmailDeliveryResult, ManagedEmailMessage, ManagedEmailTransport } from "@opengeni/core";
export type CapturedManagedEmail = ManagedEmailMessage & {
    capturedAt: string;
};
/**
 * Process-local test/development transport. Captures are count/TTL bounded and
 * one-time readable; there is deliberately no route, disk, database, or log
 * projection for message bodies or setup bearers.
 */
export declare class InMemoryManagedEmailTransport implements ManagedEmailTransport {
    private readonly options;
    private readonly messages;
    readonly sender: string;
    readonly idempotency: ManagedEmailTransport["idempotency"];
    constructor(options?: {
        maxMessages?: number;
        ttlMs?: number;
        now?: () => number;
        sender?: string;
        idempotency?: ManagedEmailTransport["idempotency"];
    });
    send(message: ManagedEmailMessage): Promise<ManagedEmailDeliveryResult>;
    take(predicate: (message: CapturedManagedEmail) => boolean): CapturedManagedEmail | null;
    size(): number;
    private prune;
    private now;
}
export declare function createManagedEmailTransport(settings: Settings): ManagedEmailTransport;