Notification System Integration

Delivering order updates, appointment reminders, or critical system alerts to customers requires each channel to be coded and managed separately. One service for SMS, another for email, a separate integration for push notifications — and all of them require maintenance. On top of that, some users never check their email, some want to receive SMS, and others are only active on WhatsApp. A message that doesn’t reach the user through one channel is effectively an undelivered message.

Our Solution Approach

We bring different notification channels together in a single centralized abstraction layer. Your application’s code no longer needs to know which channel is being used — when you want to send a message, the system knows which channel to try, what to do if it doesn’t get through, and how to report the delivery status. User preferences are stored in the system; everyone receives notifications through their preferred channel.

Scope & Features

• Push notifications — iOS and Android app notifications via Firebase Cloud Messaging (FCM); segmentation, scheduling and title/content management
• SMS integration — Short message delivery via Twilio, Netgsm, or Iletimerkezi; OTP, notification, and campaign sending
• WhatsApp Business API — Official business communication with Meta-approved template messages; order notifications, appointment reminders, or customer support
• Transactional email — Resend, SendGrid, or Amazon SES; one-time messages tied to system events
• In-app notifications — Real-time in-app notifications based on WebSocket or polling; read-status tracking and notification history
• Fallback chains — If push fails, try SMS; if SMS fails, send email; critical messages always reach the recipient
• User preference management — Users choose which type of notification to receive via which channel; preferences are stored in the system
• Delivery reports and tracking — Sent, delivered, opened, clicked; the performance of each channel is available in trackable reports

Technical Standards

The notification abstraction layer is developed in Node.js; adding a new channel does not require modifying existing code. Template management works channel-independently: the same template is converted into the appropriate format and sent across different channels. Service account management and token renewal for FCM integration are automated.

Who Is It For?

• E-commerce and service businesses that communicate order, shipping, or appointment information to customers and want to do so across multiple channels
• Software teams that want to instantly relay critical system events (alarms, errors, actions requiring approval) to operators or administrators
• Product teams that want to build push notification and in-app notification infrastructure for their mobile or web applications

Expected Outcomes

• The delivery rate of critical notifications increases; fallback chains ensure that a single channel failure cannot block the message
• Customers receive timely information via their preferred channel; communication satisfaction improves
• Operational alerts are never missed; errors or critical situations reach the relevant person instantly
• The maintenance burden of managing multiple channels is reduced to managing a single service through the centralized abstraction layer