I Built an Industry-Grade Email Queue System ⚡ (BullMQ + Node.js)

Ever wondered how companies like Netflix, Amazon, or SaaS apps send millions of emails daily without crashing their servers? 🤔
In this video, I’ll show you how I built a Scalable Email Queue System using BullMQ, Redis, and Node.js – the same concepts used in real-world production systems.

🚀 What you’ll learn:

Why queues are critical for scalability, fault tolerance & async tasks.

Producer → Queue → Worker architecture explained.

Setting up BullMQ with Redis to handle background jobs.

Retry & backoff strategies to handle failed emails safely.

Rate limiting to prevent email server overload.

Scaling to handle millions of jobs in real-world apps.

Building a production-grade email service with Nodemailer/SES/SendGrid.

By the end of this project, you’ll not only understand queue systems deeply, but you’ll also walk away with an industry-grade project you can proudly showcase.

Quick Links:
Repo: https://github.com/devmdfaiz/MailQ
Discord Community: / discord

Credits:
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Timestamps:
00:00:00 - Intro
00:01:40 - Explanation
00:28:38 - Code Part