import { P as ProviderFactory } from "../../packem_shared/provider.d-BLLbEuQ8.js";
export type { a as Provider } from "../../packem_shared/provider.d-BLLbEuQ8.js";
import { D as DkimOptions } from "../../packem_shared/types.d-A1Eea-p_.js";
import { B as BaseConfig, E as EmailOptions } from "../../packem_shared/types.d-CyiC9uRC.js";
import 'node:buffer';
/**
 * SMTP configuration
 */
interface SmtpConfig extends BaseConfig {
  authMethod?: "LOGIN" | "PLAIN" | "CRAM-MD5" | "OAUTH2";
  /**
   * DKIM signing, applied to the serialized MIME message just before `DATA` is sent.
   *
   * Canonicalization defaults to `relaxed/relaxed` here rather than the `simple/simple` of
   * {@link DkimOptions}: SMTP hops routinely re-wrap whitespace, which `simple` does not
   * tolerate. Set `headerCanon`/`bodyCanon` explicitly to override.
   */
  dkim?: DkimOptions;
  host: string;
  maxConnections?: number;
  oauth2?: {
    accessToken?: string;
    clientId: string;
    clientSecret: string;
    expires?: number;
    refreshToken: string;
    user: string;
  };
  password?: string;
  pool?: boolean;
  port: number;
  rejectUnauthorized?: boolean;
  secure?: boolean;
  user?: string;
}
/**
 * SMTP-specific email options
 */
interface SmtpEmailOptions extends EmailOptions {
  /**
   * Delivery Status Notification options
   */
  dsn?: {
    /** Request notification on delay */
    delay?: boolean;
    /** Request notification on failure */
    failure?: boolean;
    /** Request successful delivery notification */
    success?: boolean;
  };
  /** Special Google Mail headers */
  googleMailHeaders?: {
    /** Category for email organization */
    category?: "primary" | "social" | "promotions" | "updates" | "forums";
    /** Feedback ID for engagement tracking */
    feedbackId?: string;
    /** Mark as promotional content */
    promotionalContent?: boolean;
  };
  /** Reference to a previous message ID (for threading) */
  inReplyTo?: string;
  /** List-Unsubscribe header for easy unsubscribe functionality */
  listUnsubscribe?: string | string[];
  /** Message priority: 'high', 'normal', or 'low' */
  priority?: "high" | "normal" | "low";
  /** References to related message IDs */
  references?: string | string[];
  /** Whether to sign the email with DKIM */
  useDkim?: boolean;
}
/**
 * SMTP provider for sending emails via SMTP protocol
 */
declare const smtpProvider: ProviderFactory<SmtpConfig>;
export { type ProviderFactory, type SmtpConfig, type SmtpEmailOptions, smtpProvider };