mailgrid

Mailgrid is a high-performance, ultra-lightweight CLI tool written in Go for sending bulk emails via SMTP from CSV or Google Sheets. Built for speed, reliability, and minimalism — no bloated web UIs, just powerful automation.

🚀 Features

Mailgrid is a fast, minimal CLI tool for sending personalized emails from CSV files via SMTP — no web UI, just powerful automation.

📬 Email Capabilities

• Bulk email sending from any CSV file
• Dynamic templating using Go’s native text/template
  • Supports placeholders like {{.name}}, {{.company}}, etc.
• Custom subject lines via CLI flag or config

⚙️ Configuration & Control

• SMTP support for Gmail, Zoho, Outlook, and custom servers
• Lightweight config via a simple config.json
• Dry-run mode (--dry-run) to preview rendered emails without sending
• Missing field warnings for incomplete CSV rows

🛠️ Developer Experience

• Built with Go — fast, static binary with zero dependencies
• Cross-platform support — runs on Linux, macOS, and Windows
• Live CLI logs for each email: success ✅ or failure ❌
• Production-ready directory structure with modular packages

🔜 Coming Soon

• 🚦 rate-limiting
• 📊 Delivery summary metrics (sent, failed, skipped)

📄 Licensed under BSD-3-Clause — see LICENSE