update

ts/mail/delivery/interfaces.ts

@@ -96,6 +96,11 @@ export interface ISmtpSession {
    */
   emailData: string;
   
+  /**
+   * Chunks of email data for more efficient buffer management
+   */
+  emailDataChunks?: string[];
+  
   /**
    * Whether the connection is using TLS
    */
@@ -130,6 +135,11 @@ export interface ISmtpSession {
    * Email processing mode to use for this session
    */
   processingMode?: EmailProcessingMode;
+  
+  /**
+   * Timestamp of last activity for session timeout tracking
+   */
+  lastActivity?: number;
 }
 
 /**