/**
 * Email opt-in system for FAF CLI
 * Respectful, one-time only, completely optional
 */
/**
 * Check if we've already asked for email
 */
export declare function hasAskedForEmail(): boolean;
/**
 * Check if user is subscribed
 */
export declare function isSubscribed(): boolean;
/**
 * Prompt for email opt-in (one time only)
 */
export declare function promptEmailOptIn(options?: {
    quiet?: boolean;
}): Promise<void>;
/**
 * Allow manual subscription via flag
 */
export declare function subscribeViaFlag(email: string): Promise<void>;
/**
 * Show notification status
 */
export declare function showSubscriptionStatus(): void;
/**
 * Remove email from notifications
 */
export declare function unsubscribe(): void;
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