feat(structure): Use unified Email class

ts/mail/core/classes.bouncemanager.ts

@@ -3,6 +3,7 @@ import * as paths from '../../paths.js';
 import { logger } from '../../logger.js';
 import { SecurityLogger, SecurityLogLevel, SecurityEventType } from '../../security/index.js';
 import { LRUCache } from 'lru-cache';
+import type { Email } from './classes.email.js';
 
 /**
  * Bounce types for categorizing the reasons for bounces
@@ -380,7 +381,7 @@ export class BounceManager {
    * @param bounceEmail The email containing bounce information
    * @returns Processed bounce record or null if not a bounce
    */
-  public async processBounceEmail(bounceEmail: plugins.smartmail.Smartmail<any>): Promise<BounceRecord | null> {
+  public async processBounceEmail(bounceEmail: Email): Promise<BounceRecord | null> {
     try {
       // Check if this is a bounce notification
       const subject = bounceEmail.getSubject();
@@ -435,7 +436,7 @@ export class BounceManager {
       if (!recipient) {
         logger.log('warn', 'Could not extract recipient from bounce notification', {
           subject,
-          sender: bounceEmail.options.from
+          sender: bounceEmail.from
         });
         return null;
       }
@@ -449,7 +450,7 @@ export class BounceManager {
       // Create bounce data
       const bounceData: Partial<BounceRecord> = {
         recipient,
-        sender: bounceEmail.options.from,
+        sender: bounceEmail.from,
         domain: recipient.split('@')[1],
         subject: bounceEmail.getSubject(),
         diagnosticCode,