export type ProviderMetricsResult<T> = {
    available: true;
    data: T;
} | {
    available: false;
    reason: string;
};
export interface EmailEngagement {
    templateId: string;
    delivered: number;
    uniqueOpens: number;
    uniqueClicks: number;
    openRate: number | null;
}
export declare function fetchEmailEngagement(templateIds: string[], windowDays: number, orgId?: string): Promise<ProviderMetricsResult<EmailEngagement[]>>;
export interface EmailActivityEntry {
    msgId: string;
    toEmail: string;
    fromEmail: string;
    subject: string;
    status: string;
    opensCount: number;
    clicksCount: number;
    lastEventTime: string;
}
export declare function fetchEmailActivity(options: {
    templateId: string;
    orgId?: string;
    limit?: number;
}): Promise<ProviderMetricsResult<EmailActivityEntry[]>>;