/**
 * Validate Email via Infobip Service
 * Validates email addresses using Infobip Email Validation API
 *
 * @see https://www.infobip.com/docs/api/channels/email/validate-email-addresses
 */
import type { ServiceOptions } from '@plyaz/types/api';
import type { EndpointsList } from '@/api/endpoints';
import type { FetchResponse } from 'fetchff';
import type { InfobipValidateEmailRequest } from '@plyaz/types/api';
/**
 * Validate email address via Infobip
 * Uses endpoint: POST /email/2/validation
 *
 * @param email - Email address to validate (can be string or request object)
 * @param options - Optional service options (client override, config overrides)
 * @returns Promise<InfobipValidateEmailResponse>
 *
 * @example
 * ```typescript
 * // Validate single email (string)
 * const result = await validateInfobipEmail('user@example.com');
 * console.log(result.validMailbox); // true or false
 *
 * // Validate with request object
 * const result = await validateInfobipEmail({
 *   to: 'user@example.com',
 * });
 *
 * // With custom client and caching
 * const result = await validateInfobipEmail('user@example.com', {
 *   apiClient: customClient,
 *   apiConfig: { cacheTime: 300 }, // Cache for 5 minutes
 * });
 * ```
 *
 * @throws {ApiPackageError} When the request fails or validation errors occur
 */
export declare function validateInfobipEmail<TEndpoints = EndpointsList>(email: string | InfobipValidateEmailRequest, options?: ServiceOptions<TEndpoints>): Promise<FetchResponse>;
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