/**
 * Reads each mounted app's transactional email catalog from the browser.
 *
 * Workspace apps are path-mounted on a single origin, so the browser can call
 * another app's action endpoint directly and its own session cookie carries the
 * caller's identity. Fanning out here rather than server-side keeps every app's
 * existing access checks in force — Dispatch never sees a catalog the signed-in
 * user could not have loaded themselves.
 */
export interface AppTransactionalEmail {
    id: string;
    app: string;
    name: string;
    trigger: string;
    recipient: string;
    recipientLabel: string;
    sender: string;
    senderLabel: string;
    /** null when the send log could not be read — not the same as zero sends. */
    sent: number | null;
    failed: number | null;
    lastSentAt: number | null;
}
export interface AppEmailCatalog {
    appId: string;
    appName: string;
    appPath: string;
    emails: AppTransactionalEmail[];
    /** Set when this app's catalog could not be read at all. */
    error: string | null;
    /** Set when the catalog loaded but its send counts did not. */
    statsError: string | null;
}
export interface LocalTransactionalEmailCatalog {
    app: string;
    statsAvailable: boolean;
    statsError: string | null;
    emails: AppTransactionalEmail[];
}
export declare function aggregateSharedEmails(local: LocalTransactionalEmailCatalog, appCatalogs: AppEmailCatalog[]): {
    emails: AppTransactionalEmail[];
    statsError: string | null;
};
export declare function callAppAction<T>(appPath: string, action: string, params: Record<string, unknown>, method: "GET" | "POST"): Promise<T>;
export declare function fetchAppEmailCatalog(app: {
    id: string;
    name: string;
    path: string;
}, windowDays: number): Promise<AppEmailCatalog>;
export interface EmailPreview {
    subject: string;
    html: string;
    text: string;
}
/** Render one email's preview with dummy data, from the owning app. */
export declare function fetchEmailPreview(appPath: string, id: string): Promise<EmailPreview>;
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