📧 Email Campaign Dispatcher (Go)

A lightweight, concurrent email campaign dispatcher built in Go using the Producer–Consumer pattern and Goroutines.
This project is an MVP / Proof of Concept designed to send bulk emails efficiently at low cost by leveraging Go’s powerful concurrency model.

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Why This Project Exists

Most email marketing tools become very expensive as your email list grows.

Instead of relying on third-party tools:

• We build our own email dispatcher
• We control cost, performance, and scaling
• We use Go, because concurrency is its strongest feature

This project focuses on core backend functionality only — no unnecessary complexity.

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Core Concept

Problem
Sending emails sequentially is slow and wastes system resources.

Solution
Send emails concurrently using worker goroutines.

Key Components

• CSV file → Source of recipient data
• Producer → Reads CSV and creates jobs
• Consumers (Workers) → Send emails concurrently
• Channels → Communication between goroutines
• SMTP Server → External email delivery service

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Architecture Overview

CSV File
   |
   v
Producer (CSV Reader)
   |
   v
Go Channel (Job Queue)
   |
   v
Multiple Consumer Workers
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   v
SMTP Server
   |
   v
End Users

Project Structure

email-dispatcher/
│
├── main.go          # Application entry point
├── emails.csv       # Sample CSV file with recipients
├── go.mod           # Go module configuration
└── README.md

🛠️ Setup & Run

1. Check Go Installation

  go version

2. Initialize Go Module

  go mod init github.com/your-username/email-dispatcher

3. Run the Application

   go run main.go

MVP Goals

• Concurrent email sending
• Efficient CPU and memory usage
• Simple and readable code

Not Included

• Retry logic
• Scheduling
• UI or dashboard