Add BCC functionality to email service

- Added optional bcc parameter to EmailOptions interface
- Updated sendEmail method to support BCC recipients
- Modified notifySubscribersOfNewEntry to use single BCC email instead of individual emails
- Improved logging to show BCC recipient count
- More efficient email delivery for multiple subscribers

backend/src/services/emailService.ts

@@ -3,6 +3,7 @@ import nodemailer from 'nodemailer';
 
 interface EmailOptions {
   to: string;
+  bcc?: string[];
   subject: string;
   html: string;
 }
@@ -45,7 +46,7 @@ export class EmailService {
 
   async sendEmail(options: EmailOptions): Promise<boolean> {
     try {
-      const mailOptions = {
+      const mailOptions: any = {
         from: {
           name: 'Court Docket System',
           address: process.env['GOOGLE_EMAIL'] || 'system@deafgain.org',
@@ -55,10 +56,16 @@ export class EmailService {
         html: options.html,
       };
 
+      // Add BCC if provided
+      if (options.bcc && options.bcc.length > 0) {
+        mailOptions.bcc = options.bcc;
+      }
+
       const result = await this.transporter.sendMail(mailOptions);
       
       logger.info('Email sent successfully:', {
         to: options.to,
+        bcc: options.bcc ? `${options.bcc.length} recipients` : 'none',
         subject: options.subject,
         messageId: result.messageId,
       });
@@ -85,21 +92,21 @@ export class EmailService {
 
       const subject = `New Court Filing: ${entryTitle}`;
       const html = this.generateNotificationEmail(entryTitle, entryDate, entrySummary);
+      const subscriberEmails = subscribers.map((subscriber: any) => subscriber.email);
 
-      // Send emails to all subscribers
-      const emailPromises = subscribers.map((subscriber: any) =>
-        this.sendEmail({
-          to: subscriber.email,
-          subject,
-          html,
-        })
-      );
+      // Send single email with all subscribers as BCC
+      const success = await this.sendEmail({
+        to: process.env['GOOGLE_EMAIL'] || 'system@deafgain.org',
+        bcc: subscriberEmails,
+        subject,
+        html,
+      });
 
-      const results = await Promise.allSettled(emailPromises);
-      const successful = results.filter((result: any) => result.status === 'fulfilled').length;
-      const failed = results.filter((result: any) => result.status === 'rejected').length;
-
-      logger.info(`Email notifications sent: ${successful} successful, ${failed} failed`);
+      if (success) {
+        logger.info(`Email notification sent successfully to ${subscriberEmails.length} subscribers via BCC`);
+      } else {
+        logger.error(`Failed to send BCC email notification to ${subscriberEmails.length} subscribers`);
+      }
     } catch (error) {
       logger.error('Failed to notify subscribers:', error);
     }