import type { EmailEvent } from "./types.js";
/** Parse a Mailgun webhook payload into normalized {@link EmailEvent} records. */
export declare function parse(payload: unknown): EmailEvent[];
/**
 * Verify a Mailgun webhook signature using HMAC-SHA256 (Web Crypto).
 * signingKey is the Mailgun webhook signing key.
 */
export declare function verifySignature(timestamp: string, token: string, signature: string, signingKey: string): Promise<boolean>;
/**
 * Verify a Mailgun webhook payload using the nested `signature` object.
 * Returns false when the payload shape is invalid.
 */
export declare function verifyPayload(payload: unknown, signingKey: string): Promise<boolean>;