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Notification System

$19

Multi-channel notification engine for email, webhook, in-app, and SMS with template system.

📁 9 files

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📁 File Structure 9 files

notification-system/ ├── LICENSE ├── README.md ├── examples/ │ └── basic_example.py ├── free-sample.zip ├── guide/ │ ├── 01_features.md │ ├── 02_quick-start.md │ └── 03_project-structure.md ├── index.html └── src/ └── main.py

📖 Documentation Preview README excerpt

Notification System

A Python notification engine for SaaS applications. Supports email, webhook, in-app, and SMS channels with a template system, scheduling, per-user preferences, delivery tracking, and retry logic — all built on Python's standard library.

Features

Multi-channel delivery — Email, webhook, in-app, and SMS (via pluggable adapters)
Template engine — Reusable notification templates with variable interpolation
Scheduling — Send immediately or schedule for a future time
User preferences — Per-user channel opt-in/opt-out with global defaults
Delivery tracking — Track sent, delivered, failed, and pending status per notification
Retry logic — Automatic retries with exponential backoff for failed deliveries
Batch sending — Send one notification to many recipients efficiently
Priority levels — Critical, high, normal, low — with priority-based queue ordering
Digest mode — Aggregate low-priority notifications into periodic digests
Audit trail — Full history of every notification sent, to whom, and delivery result

Requirements

Python 3.10+
No external dependencies (stdlib only)

Quick Start


python src/main.py --init-demo


# Send a notification
curl -X POST http://localhost:8008/api/notifications \
  -H "Content-Type: application/json" \
  -d '{"recipient_id": "user_1", "channel": "email", "template": "welcome", "variables": {"name": "Alice"}}'

# Send to multiple recipients
curl -X POST http://localhost:8008/api/notifications/batch \
  -H "Content-Type: application/json" \
  -d '{"recipient_ids": ["user_1", "user_2"], "channel": "in_app", "template": "announcement", "variables": {"message": "New feature launched!"}}'

# List notifications for a user
curl http://localhost:8008/api/notifications/user_1

# Check delivery status
curl http://localhost:8008/api/notifications/status/notif_abc123

# Manage templates
curl http://localhost:8008/api/templates

# Update user preferences
curl -X PUT http://localhost:8008/api/preferences/user_1 \
  -H "Content-Type: application/json" \
  -d '{"email": true, "sms": false, "in_app": true, "webhook": false}'

# Process pending scheduled notifications
curl -X POST http://localhost:8008/api/notifications/process-queue

API Endpoints

| Method | Path | Description |

... continues with setup instructions, usage examples, and more.

📄 Code Sample .py preview

examples/basic_example.py#!/usr/bin/env python3 """ Notification System — Basic Usage Example =========================================== Demonstrates creating templates, sending notifications, batch delivery, checking preferences, processing the queue, and viewing delivery status. Run: python3 basic_example.py """ from __future__ import annotations import sys from pathlib import Path sys.path.insert(0, str(Path(__file__).resolve().parent.parent / "src")) from main import NotificationEngine def main() -> None: print("=== Notification System — Basic Example ===\n") engine = NotificationEngine(data_dir=Path("/tmp/notification-demo")) # --- 1. Create notification templates --- engine.create_template( "welcome", "email", subject="Welcome to {{app_name}}, {{name}}!", body="Hi {{name}},\n\nWelcome aboard! Your {{app_name}} account is ready.\n\n" "Get started: https://app.example.com/onboarding\n\nCheers,\nThe Team", ) engine.create_template( "alert", "in_app", subject="{{title}}", body="{{message}}", ) engine.create_template( "invoice", "email",

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