import type { AcurisClient } from "../client.js";
import type { EmailValidateBatchOptions, EmailValidateBatchResult } from "../types.js";
/**
 * Validate up to 1,000 email addresses in one synchronous request. Charges
 * N email credits atomically — the call rejects with HTTP 403
 * `insufficient_email_credits` if the key doesn't have enough headroom.
 *
 * Per-domain DNS results are cached server-side for 5 minutes, so a batch
 * of 1,000 emails sharing 30 unique domains issues ~30 lookups (not 1,000).
 */
export declare function emailValidateBatch(client: AcurisClient, emails: string[], options?: EmailValidateBatchOptions): Promise<EmailValidateBatchResult>;
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