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InvoiceFlow — Modern Invoice Management SaaS

Simplify invoicing with a modern, cloud-powered platform designed for freelancers, agencies, startups, and businesses to create professional invoices, automate billing workflows, track payments, and manage clients—all from one intuitive dashboard.



InvoiceFlow


✨ Why InvoiceFlow?

Managing invoices shouldn't be time-consuming. InvoiceFlow streamlines the entire billing lifecycle—from creating beautiful invoices and delivering them to clients, to tracking payments, generating professional PDFs, and automating reminders.

Built with the latest web technologies including Next.js App Router, Neon PostgreSQL, Prisma ORM, Auth.js, and Tailwind CSS, the platform delivers a fast, secure, and scalable invoicing experience for modern businesses.

Built for Modern Businesses

  • 📄 Professional Invoice Creation
  • 👥 Client Management
  • 📧 Automated Invoice Delivery
  • 📑 Instant PDF Generation
  • 💳 Payment Tracking
  • 📊 Business Analytics Dashboard
  • 🔐 Passwordless Authentication
  • ☁️ Cloud-Based SaaS Platform
  • 🌙 Beautiful Dark & Light UI
  • ⚡ Fast & Responsive Experience

🖼️ Preview

📊 Business Dashboard

Monitor revenue, invoice performance, payment status, outstanding balances, and business growth through interactive analytics.


📄 Invoice Management

Create, edit, duplicate, organize, and track invoices with a clean, intuitive workspace.


📧 Client Communication

Deliver invoices instantly through email, monitor delivery status, and automate payment reminders.


📑 PDF Generator

Generate beautifully formatted PDF invoices that are ready to download, print, or share with clients.


🚀 Features

📄 Invoice Management

Feature Description
Professional Invoice Builder Create polished invoices in minutes
Invoice Editing Modify invoices anytime
Invoice History Access complete billing records
Status Tracking Pending, Paid & Overdue monitoring
Duplicate Invoices Quickly recreate previous invoices
Invoice Deletion Remove outdated invoices safely

👥 Client Management

Feature Description
Client Directory Store client information
Contact Management Organize business contacts
Invoice History Track invoices per client
Email Records View communication history

📧 Email Automation

Feature Description
Invoice Delivery Send invoices directly from the dashboard
Responsive Email Templates Professionally designed templates
Payment Reminders Automated reminder emails
Delivery Tracking Confirm successful email delivery
Magic Link Emails Passwordless authentication emails

📑 PDF Generation

Feature Description
Dynamic PDF Creation Generate invoices instantly
Professional Layouts Business-ready invoice templates
Printable Documents Optimized for print
PDF Downloads Download invoices anytime
Real-Time Generation No waiting or processing delays

📊 Analytics Dashboard

Feature Description
Revenue Overview Monitor total earnings
Invoice Statistics Analyze invoice activity
Payment Tracking View paid and pending invoices
Monthly Reports Business performance insights
Interactive Charts Visualize financial growth

🔐 Authentication & Security

Feature Description
Auth.js Authentication Secure user login
Magic Link Login Passwordless authentication
Protected Dashboard Secure access control
Session Management Reliable authentication sessions
Server Validation Secure backend validation

🌟 Core Modules

  • 📄 Invoice Management
  • 👥 Client Management
  • 📧 Email Automation
  • 📑 PDF Generation
  • 📊 Revenue Analytics
  • 🔐 Authentication
  • ⚙️ Account Settings
  • 📋 Invoice History
  • 💳 Payment Tracking
  • 🔔 Reminder System

🚀 Getting Started

Prerequisites

  • Node.js 20+
  • PostgreSQL Database
  • Neon Database (Recommended)

Installation

# Clone the repository
git clone https://github.com/Fouzia-Oreen/InvoiceFlow_Modern-Invoice-Management-SaaS

# Navigate into the project
cd invoiceflow

# Install dependencies
npm install

# Generate Prisma Client
npx prisma generate

# Run migrations
npx prisma migrate dev

# Start development server
npm run dev

⚙️ Environment Variables

DATABASE_URL=

AUTH_SECRET=

AUTH_URL=

MAILTRAP_TOKEN=

MAILTRAP_ENDPOINT=

NEXT_PUBLIC_APP_URL=

🛠️ Technology Stack

Frontend

  • ⚛️ Next.js 15 (App Router)
  • ⚛️ React
  • 🔷 TypeScript
  • 🎨 Tailwind CSS
  • 🧩 shadcn/ui
  • ✨ Framer Motion
  • 📊 Recharts

Backend

  • 🚀 Next.js Server Actions
  • 🛣️ Route Handlers
  • 🗄️ Prisma ORM
  • 🐘 PostgreSQL

Authentication

  • 🔐 Auth.js
  • ✉️ Magic Link Authentication

Database

  • 🌐 Neon PostgreSQL

Email Services

  • 📧 Mailtrap Email API
  • 📨 Transactional Email Templates

Validation

  • ✅ Zod
  • 🛡️ Conform

DevOps

  • ☁️ Vercel
  • 🌿 Git
  • 🐙 GitHub
  • 📦 ESLint
  • ✨ Prettier
  • 💻 VS Code

📁 Project Structure

invoiceflow/
│
├── app/
│   ├── dashboard/
│   ├── invoices/
│   ├── auth/
│   ├── settings/
│   └── api/
│
├── components/
│   ├── ui/
│   ├── dashboard/
│   ├── invoice/
│   └── email/
│
├── actions/
├── lib/
├── prisma/
├── hooks/
├── utils/
├── emails/
├── public/
│
├── middleware.ts
├── auth.ts
└── prisma.schema

🔒 Security Features

  • 🔐 Passwordless Authentication
  • ✉️ Magic Link Verification
  • 🛡️ Protected Routes
  • 🔑 Secure Session Management
  • ✅ Server-Side Validation
  • 🛡️ CSRF Protection
  • 🔒 Environment Variable Isolation

📈 Future Roadmap

  • 💳 Stripe Payment Integration
  • 🔁 Recurring Invoices
  • 💼 Client Portal
  • 👥 Team Collaboration
  • 💸 Expense Management
  • 📊 Advanced Financial Reports
  • 🌍 Multi-Currency Support
  • 📱 Mobile Application
  • 🤖 AI Invoice Generator
  • 🤖 AI Expense Categorization
  • 🤖 AI Payment Forecasting
  • 🤖 AI Financial Insights

🤝 Contributing

We welcome contributions from the community.

  • 🐛 Report Bugs
  • 💡 Suggest Features
  • 🔧 Submit Pull Requests
  • 📖 Improve Documentation
  • ⭐ Star the Repository

💝 Support

If you find this project useful:

  • ⭐ Star this repository
  • 🍴 Fork the project
  • 🐛 Report issues
  • 💬 Share with fellow developers
  • ❤️ Support continued development

📄 License

This project is licensed under the MIT License.

You are free to use, modify, distribute, and build commercial applications while providing appropriate attribution.


❤️ Built for Modern Businesses

InvoiceFlow is more than an invoicing application—it's a complete billing and client management platform engineered to simplify financial workflows, automate repetitive tasks, and help businesses get paid faster.


Made with ❤️ for Freelancers • Agencies • Startups • Small Businesses • Enterprises

About

A modern, full-stack invoice management platform built to streamline billing workflows for freelancers, agencies, and businesses. InvoiceFlow enables users to create, manage, send, and track invoices while automating client communication, payment reminders, email automation, PDF generation, analytics dashboards, and secure magic link authentication

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