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I’m building a dedicated marketing-email blaster and need a developer who lives and breathes Node.js. The core goal is simple: take a clean list of contacts and push out high-volume campaigns reliably, with full control from my own interface rather than a hosted platform. Your brief • Build the entire sending engine in Node.js, tuned for speed, stability, and deliverability. • Connect the engine to at least one third-party SMTP or API-based provider of your choice (I’m flexible here, as long as the integration layer lets me swap providers later). • Provide a minimal web dashboard where I can paste or upload a list, compose an HTML template, hit “Send” and watch progress in real time. Deliverables 1. Production-ready Node.js codebase (well-commented, ES6+). 2. Simple front-end dashboard (React, Vue, or plain HTML/CSS—your call). 3. README with setup, environment variables, and deployment steps. 4. Basic report endpoint returning sends, bounces, and opens if the chosen provider’s API supports it. Acceptance criteria • A test blast of 10,000 contacts completes without crashing or timing out. • Swapping API credentials to a different third-party provider requires no code changes beyond the config file. • Code passes linting and installs with npm i && npm run start on a fresh machine. Speed, clear communication, and previous experience writing high-volume email senders in Node.js will be what wins this project. If that sounds like you, let’s talk.
Project ID: 40688541
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102 freelancers are bidding on average ₹22,862 INR for this job

As a full-service digital agency, 360 Elevate, I believe that my proficiency in Email Marketing and Javascript frameworks such as Node.js would make me a strong candidate for your project. Over the past decade, my team and I have developed robust digital solutions tailored to clients' unique requirements, including high-volume email senders akin to the one you're envisioning. My experience working with various SMTP providers and APIs while offering clients the flexibility to switch between them easily aligns seamlessly with your needs. Imbued in my work is a drive for speed, stability, and deliverability - all traits essential to your Node.js based email blaster project. Additionally, my JavaScript expertise ensures that the production-ready codebase we provide will be well-commented and compatible with multiple machines without requiring complex installation processes. Lastly, I understand the significance of transparent communication in a collaborative project like this. Alongside the core deliverables mentioned in your project description, you'll benefit from my ability to establish clear lines of communication, ensuring that we are both consistently on the same page throughout the course of this partnership. With your vision and our combined skills, I'm confident that we can create an outstanding email blaster solution that not only meets but exceeds expectations.
₹25,000 INR in 7 days
9.7
9.7

Hello Valuable Client, We can build the email system with a modular Node.js architecture focused on reliability, scalability and maintainability. • Develop a Node.js sending engine with queues, controlled concurrency and retry handling. • Integrate an SMTP/API provider through a provider-agnostic adapter layer for easy future switching. • Build a lightweight dashboard for contact upload, HTML composition and real-time campaign progress. • Validate contact lists and handle bounces, failures and delivery status cleanly. • Add reporting for sends, bounces and opens where supported by the provider. • Keep configuration and credentials environment-based so providers can be changed without code modifications. • Implement logging and error handling for reliable long-running campaigns. • Test the system with a controlled 10,000-contact campaign and monitor performance. • Provide clean ES6+ code, linting, README and deployment instructions. We’ll also include unsubscribe/opt-out handling and provider-compliance safeguards to support legitimate marketing campaigns. Best regards, CnEL India
₹25,000 INR in 15 days
8.8
8.8

I have 8+ years of experience in web development and am familiar with modern web technologies, frameworks like Node.js and other tools. You need a reliable email-sending engine built in Node.js that can handle large contact lists and deliver campaigns fast. I’ll structure the code with a provider abstraction, so you can switch SMTP or API providers by changing settings only. The dashboard will let you upload contacts, build an HTML template, start a blast, and watch progress live. I’ll also include a simple report endpoint for sends, bounces, and opens, wherever the provider supports it. A test run of 10,000 contacts will be handled cleanly, without crashes or timeouts. I can start right away.
₹25,000 INR in 7 days
7.7
7.7

What you need is not just a bulk sender, but a Node.js mail engine that stays stable under load and does not trap you inside one provider. The main failure point in these systems is usually architecture: people wire directly into one API, skip queueing and status handling, and the tool becomes fragile the moment volume rises. I’d build the sender around a provider abstraction layer, controlled batching, and a simple dashboard that lets you upload contacts, drop in HTML, launch, and monitor progress clearly. I’ve handled custom backend work where clean code, ES6+ structure, and deployment readiness mattered as much as the feature list. Your acceptance criteria around config-only provider swapping, fresh-machine setup, and basic reporting are exactly the kind of things that should be designed from day one rather than patched in later. I can also keep the interface intentionally minimal so the first version is fast and usable. - Do you want campaign history stored in a database, or is runtime reporting enough for v1? - Should unsubscribe handling be part of this first build, or is that outside the current scope? - Will this be deployed on your own VPS/server, or do you want me to suggest a simple deployment path too?
₹25,900 INR in 7 days
7.8
7.8

Hello, I can build your Node.js-based marketing email platform with a reliable, scalable sending engine and a simple real-time dashboard. I can deliver: High-volume Node.js email sending engine SMTP/API provider integration with a swappable provider layer Contact CSV upload/paste functionality HTML email template composer Real-time campaign progress Bounce/open/sending reports where supported React-based dashboard Clean ES6+ code with linting Complete README, environment configuration and deployment instructions I’ll design the system with queue-based processing, rate limiting, retries, provider abstraction, validation and error handling so a 10,000-contact test campaign can run reliably without blocking the application. The architecture will allow you to switch providers through configuration rather than modifying the core sending logic. I’m experienced with Node.js, REST APIs, React, asynchronous processing and scalable backend systems, and I can deliver a clean, production-ready codebase. Best Regards, Shakti Tamnwar
₹25,000 INR in 7 days
7.8
7.8

A bulk sender like this needs two things done properly from the start: a resilient Node.js dispatch engine and a provider layer that does not trap you with one email service. I’d focus on queue flow, concurrency control, failure recovery, and a simple live dashboard so you can launch campaigns and monitor progress without depending on a hosted platform. This is the kind of build where previous backend experience matters more than flashy UI. I’ve worked on custom Node.js features, third-party integrations, and admin-side tools where maintainability, config-driven behavior, and stable execution were the real priority, and that matches your brief closely. I’d also make the codebase clean enough that another provider can be added later without touching core campaign logic. - Do you want the HTML composer to be a basic paste editor, or should it support saved templates too? - For real-time progress, are you fine with polling updates, or do you want a websocket-style live feed? - Do you already have bounce/open webhooks available with your chosen provider account level?
₹13,650 INR in 18 days
7.2
7.2

1) What specific third-party SMTP or API-based providers are you considering for integration, and do you have any preferences based on their features or limitations? 2) How do you envision the handling of bounced emails and unsubscribe requests within the application, and should this be reflected in the reporting endpoint? 3) Will the HTML templates for the emails be dynamic or static, and do you require any specific templating engine or library for composing these emails? I can commit to providing feedback and iteration updates within 12 to 24 hours. Additionally, I can share small incremental updates throughout the development process to maintain momentum. As a first deliverable, I can provide an initial API skeleton for the email sending engine within 2 to 3 days, allowing us to establish the core functionality early on. I look forward to discussing the direction of this project and getting started. Please feel free to message me! Best, Rajavel
₹24,999 INR in 10 days
7.4
7.4

Hello, I’ve gone through your project details and this is something I can definitely help you with. I have 10+ years of experience in mobile and web app development, working with Flutter, Android, iOS, React, Node.js, and APIs. I focus on clean architecture, scalable code, and clear communication to ensure the project runs smoothly from start to finish. I will first review your requirements, suggest the best technical approach, and then proceed with development while keeping you updated at every stage. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: 1. Do you need this for mobile, web, or both? 2. Do you already have UI/UX designs or should we create them? 3. Will there be any third-party API or payment gateway integration? 4. What is your expected timeline for completion? 5. Are there any reference apps or websites you like? Have you considered specific SMTP providers for the email sending engine? Let’s discuss over chat! Regards, Arpit Jaiswal
₹27,750 INR in 28 days
6.5
6.5

Your biggest risk is IP reputation collapse if you send 10,000 emails through a single SMTP connection without throttling or domain warm-up. Most providers will flag you as spam within the first 500 sends, tanking deliverability before you finish the campaign. Quick questions - are you planning to rotate multiple sending domains to distribute reputation risk? And what's your target send rate per hour so I can architect the queue system to stay under provider limits? Here is the architectural approach: - NODE.JS QUEUE SYSTEM: Build Bull-based job queue with Redis to throttle sends at configurable rates (500/hour initially, scaling to 50K/day) and retry failed deliveries without blocking the main thread. - SMTP ABSTRACTION LAYER: Design provider-agnostic adapter pattern supporting SendGrid, Mailgun, and AWS SES through a single interface - swap credentials in .env without touching application code. - REAL-TIME DASHBOARD: React front-end with WebSocket connection streaming live send progress, bounce webhooks, and open tracking via pixel embeds in HTML templates. I've built three similar systems for SaaS clients that now process 2M+ emails monthly without deliverability issues. Let's schedule a 15-minute call to discuss your domain setup and provider selection before we architect the queue.
₹22,500 INR in 7 days
7.3
7.3

Does the swap-provider requirement mean the adapter has to hide differences in bounce and complaint webhooks too, or just the send call itself? That single interface is what makes the acceptance criterion true rather than aspirational: one adapter contract for send, one shape for delivery status coming back, and the provider becomes a config value instead of a code path. SMTP and API providers don't fail the same way, so the adapter also has to normalize what a rejected recipient or a throttled batch looks like, otherwise the swap works in the demo and breaks the first time Mailgun and SES disagree about a 4xx. For the crash you're testing against, the send itself has to be a queue, not a loop. Contacts go in as jobs, a worker pulls them at a rate the current provider can actually sustain, and the dashboard reads job state rather than holding 10k rows of send status in memory. That's also what gives you the live progress view for free, since the queue already knows what's sent, pending, and failed without any extra bookkeeping. M1: adapter interface plus SMTP and one API provider implementation, config-driven provider switch. INR 12,375, 1.5 days. M2: queued sender with rate limiting, contact upload and template compose. INR 12,375, 2 days. M3: live progress dashboard, failure handling and retry, full pipeline test at 10k contacts. INR 12,750, 1.5 days. That's a first pass off the brief, and the biggest unknown is which second provider you actually want live alongside SMTP since that changes how much normalization M1 needs. Do you have a specific API provider in mind, or is any well-known one fine for the reference implementation? And when a send partially fails partway through 10k, do you want it to auto-retry those rows or just surface them for a manual re-send?
₹37,500 INR in 5 days
6.5
6.5

As a skilled Node.js developer with a focus on building scalable, high-performance software, I am well-prepared for the unique challenges of your marketing-email blaster project. My expertise in web development extends to crafting backend engines and APIs that can handle large volumes of data smoothly and efficiently. I have also worked extensively with various third-party providers, such as SMTP and API integration, making me adaptable to your future needs if you decide to switch providers. When it comes to your core goal of speed, stability, and deliverability, my experience in optimization and performance tuning will ensure that your campaigns run flawlessly even with high volumes. I prioritize writing clear code, ensuring easy maintenance and expanding capability without needing significant code rewrites. My strength also lies in effective frontend development - whether you prefer React, Vue or plain HTML/CSS for your web dashboard - I can create an intuitive interface that allows you full control of list uploading, template composition, sends monitoring in real-time, all supported by robust backend functionality. Let's discuss how we can make your Node.js marketing email blaster vision a reality with speed and precision!
₹25,000 INR in 7 days
7.1
7.1

I can build the high-volume email blaster in Node.js, ensuring it sends campaigns reliably from your own interface. My first step will be to outline the architecture for the sending engine and confirm your preferred third-party SMTP provider. Based in Toronto, I work quickly and stay responsive throughout the project.
₹12,500 INR in 3 days
6.5
6.5

Hi, Node with a React dashboard is my main work, and swappable SMTP providers are easy to set up cleanly. Lets get in contact first.
₹12,500 INR in 5 days
6.2
6.2

As an 8+ year veteran in full stack development and AI solutions, I bring the right skills to not only build you a high-volume marketing email blaster but also ensure it runs smoothly. This project requires a deep dive into Node.js tuning for speed, stability, and deliverability, an aspect that I specialize in. With my clean code-first approach and extensive experience in writing similar high-volume email senders in Node.js, I can assure you that your project is in capable hands. Another strong suit that makes me an ideal candidate for this position is my expansive knowledge in frontend technologies like React, Vue and HTML/CSS. Crafting a minimal web dashboard where you can easily paste or upload your list, compose your HTML template and most importantly track the progress of your campaigns in real-time holds prime significance in this project. My comfort with designing simple yet meaningful dashboards will ensure you have full control over your campaigns. Lastly but crucially, my record speaks for itself. In my career I've successfully delivered over 200 projects to clients representing various domains. The one common thread has been clear communication which has been well-appreciated by clients for it allows them to get timely updates on their projects' progress. I am confident that my expertise plus my commitment to efficient communication lends well to providing the prompt updates you deserve. Let's build something truly game-changing together!
₹35,000 INR in 7 days
6.4
6.4

Hello, I’d be happy to assist you with this project. I have 5+ years of experience in Node.js and have worked on scalable backend systems and API integrations with a strong focus on performance, stability, and reliability. I will provide: • High-volume Node.js email sending engine with reliable provider integration • Provider-agnostic architecture for easy SMTP/API switching • Simple React-based dashboard for contacts, templates, sending, and real-time progress • Reporting for sends, bounces, and opens where supported • Clean, well-documented, linted, and production-ready code • Complete README with setup, environment variables, and deployment steps I’m confident I can build a stable solution capable of handling your 10,000-contact test blast and meet your acceptance criteria. I’d be glad to discuss the requirements and get started right away. Final cost and timeline will be confirmed once I understand the complete project requirements. Warm Regards, Monica Bhatia
₹15,000 INR in 4 days
5.3
5.3

Hello, Sending 10,000+ emails reliably requires more than a basic SMTP integration—the engine needs controlled concurrency, queueing, retries, provider abstraction, and accurate delivery tracking. Questions: 1. Do you already have a preferred provider such as SES, SendGrid, or Mailgun, or should I select the best option for deliverability and cost? 2. Should campaigns support scheduled sending, pause/resume, and configurable sending rates from the dashboard? With 10+ years of development experience, I can build this as a production-ready Node.js system designed around reliability and easy provider switching. My delivery approach: * Build a queue-based Node.js sending engine with rate limits, retries, failure handling, and provider abstraction. * Develop a lightweight React dashboard for contacts, HTML campaigns, live progress, and reporting. * Provide clean configuration, linting, documentation, and deployment-ready code tested against a 10,000-contact blast. I can start by defining the sending architecture and provider interface, then move directly into the production implementation. Looking forward for connecting. Best Regards, Nisha
₹35,000 INR in 27 days
5.5
5.5

Hello, I have extensive experience in the mentioned technologies and am ready to start immediately. Let’s connect via chat to discuss the project requirements further. Thank you, Jignesh
₹35,000 INR in 10 days
5.3
5.3

Hi there, I’m Karthik, a Node.js developer with over 15 years of experience in building robust applications, including high-volume email systems. I’m excited about your project to create a dedicated marketing email blaster. Here's how I can help: 1. Efficient Engine: I’ll develop a high-speed, stable Node.js engine ensuring reliable email delivery. 2. Flexible Integration: I’ll implement a third-party SMTP/API integration that allows for easy swapping of providers. 3. User-Friendly Dashboard: A minimal web dashboard for uploading contacts, composing emails, and real-time progress tracking will be built using React or your preferred tech. Deliverables: - Production-ready, well-commented Node.js code. - Simple front-end interface. - Comprehensive README for setup and deployment. - Reporting endpoint for tracking metrics. I assure you a test blast of 10,000 contacts will run smoothly, and configuration changes will be hassle-free. My focus on speed, communication, and past experience with similar projects makes me a perfect fit. Looking forward to discussing this further! Best, Karthik
₹25,000 INR in 7 days
5.3
5.3

Hi — your Node.js email engine, SMTP/API integration, HTML dashboard, real-time progress, and 10,000-contact test need a dependable queue-based design. I’m a full-stack developer building Node.js APIs, database-backed systems, and automation workflows. I’d isolate provider adapters from campaign logic, with RabbitMQ processing, retries, rate controls, status events, and configuration-only credential swaps. The dashboard can support CSV upload, HTML composition, live progress, and reports for sends, bounces, and opens where available. It’s important that failures don’t stall campaigns. My closest shipped example is an n8n cart-abandonment workflow that branches email/SMS and logs results for reporting: https://www.freelancer.com/u/albertc1996 The README can cover environment variables, deployment, linting, and npm i && npm run start on a fresh machine.
₹32,000 INR in 14 days
5.0
5.0

As a seasoned developer well-versed in HTML, JavaScript, and Node.js, I believe I am an ideal choice for your marketing-email blaster project. My work history has involved handling large-scale data management and integration projects using APIs - skillsets that align perfectly with the needs laid out for your project. In the past, my specific use of Node.js to build high-volume email senders is testimony to my ability to deliver on your speed and stability requirements. With this project, you can expect highly-commented, well-documented ES6+ codebase, delivering real-time progress updates through a user-friendly interface. Additionally, my deep understanding of cloud infrastructures and deployment will ensure the smooth running of your 'blasts', while optimizing deliverability rates. My overarching aim is always to build automated systems that are both efficient and scalable - a philosophy that aligns with your project aim as well. I provide seamless API integration even within shifting third-party contexts - a skill that obviates code changes beyond config files, just as you've asked for. Let's jargon-free, clear communication guide us towards a successful, productive partnership!
₹13,000 INR in 5 days
4.6
4.6

Kolkata, India
Member since Jun 10, 2025
₹12500-37500 INR
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