Implement Email Notifications for Invoices

[Aditya8369]

Description:

The invoice service currently has a TODO comment indicating that email notifications need to be sent when invoices are marked as sent. This feature is essential for automating communication with clients or users about invoice status, improving user experience and ensuring timely follow-ups.

Proposed Plan:

1. Integrate an email service (e.g., using Nodemailer, which is already in the tech stack).
2. Modify the services/invoiceService.js to include email sending logic after marking an invoice as sent.
3. Add email templates for invoice notifications.
4. Ensure proper error handling and logging for email failures.
5. Test the email sending functionality with mock invoices.

Result:

Users will receive automated email notifications when invoices are sent, enhancing the application's notification system and reducing manual effort.

[github-actions]

Thank you for raising this issue!

We'll review it as soon as possible. We truly appreciate your contributions! ✨

Meanwhile make sure you've visited the README.md, CONTRIBUTING.md, and CODE_OF_CONDUCT.md before creating a PR for this. Also, please do NOT create a PR until this issue has been assigned to you. 😊

[github-actions]

⚠️ Inactivity Warning

  @Aditya8369, this issue has been inactive for **15 hours**.

  Please provide an update within the next **15 hours**, or you may be **automatically unassigned**.

[Aditya8369]

@Renu-code123 rised the pr please check when free

[github-actions]

Closed automatically via merged PR #390.