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I need a complete platform that can tell—quickly and with a high degree of accuracy—whether an email address is usable. The core of the build must cover: • Syntax verification • Domain verification • Mail-server (SMTP) verification Those three checks have to run in a single pass so the user gets a clear “valid / invalid / unknown” status without waiting around. You are free to choose the stack, but solutions that lean on reliable libraries or services for DNS look-ups and SMTP handshakes (for example Python with dnspython and smtplib, or a Node.js equivalent) will go to the top of the pile. I expect: – A web interface where I can paste or upload a list and watch the progress in real time. – A clean JSON API that mirrors the same functionality for future integrations. – Clear documentation and a quick start guide so my team can deploy it on our own server (Docker is preferred). – Source code in a private repo plus a short hand-off call or video walkthrough. Accuracy, speed, and graceful error handling are non-negotiable; if the platform can’t reach a mail server or times out, it should return “unknown” rather than crashing or hanging.
Projekt-ID: 40229223
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Hi I can build a complete, fast, and accurate email verification platform covering syntax, domain, and SMTP checks in a single pass, with both web UI and API access. Core Verification Pipeline => Syntax validation (RFC-compliant parsing) => Domain verification using DNS (MX, A records via dnspython) => SMTP handshake verification (smtplib, timeout-safe, non-invasive) => Clear results: Valid / Invalid / Unknown with proper error handling Platform Features => Web interface for single or bulk email verification with live progress => JSON REST API for integration with external systems => Efficient async processing for speed and scalability => Graceful handling of timeouts, unreachable servers, or greylisting Tech Stack => Python (FastAPI preferred) + dnspython + smtplib => Dockerized deployment for easy server setup => Clean modular architecture Deliverables => Full source code in private repo => Docker setup + deployment guide => API documentation and quick-start instructions => Hand-off walkthrough video or call I’ve built backend systems involving SMTP workflows, real-time APIs, and scalable validation pipelines. Portfolio: ? [login to view URL] Happy to discuss architecture and performance targets before starting. Pavan Kumar A
$160 USD på 7 dage
3,3
3,3
100 freelancere byder i gennemsnit $242 USD på dette job

I am confident that my skills in PHP, Python, Linux, Node.js, and Docker are a great match for the "Robust Email Verification Platform" project. I assure you of accuracy, speed, and quality error handling. The budget can be adjusted once the full scope is discussed; my priority is to work within your budget. I am eager to start and deliver outstanding results. Please go through my profile its 15 years old see the work I did over the years. No Win No Fee means that your satisfaction is my utmost priority. Lets discuss the job details. Moreover, I am willing to start the job and perform tasks without even being hired; it is just to show my commitment to this project. Looking forward to hear from you.
$175 USD på 7 dage
8,7
8,7

Hello, I came across your project and found it truly interesting. With over eight years of hands-on experience in this field, I have successfully delivered high-quality solutions to clients worldwide. My dedication to excellence is reflected in the 180+ positive reviews from satisfied clients. I’d love to bring this expertise to your project and ensure outstanding results. However, I do have a few important points I’d like to clarify to align perfectly with your vision. Let’s connect via chat, where I can also share relevant examples of my past work. I'm looking forward to hearing back from you! Best Regards, Divu.
$250 USD på 4 dage
8,2
8,2

Hello, As a full-stack developer with a focus on Python and JavaScript, I have the skills necessary to create the robust email verification platform you're seeking. My extensive experience in web and backend development, notably in Python which you've mentioned as a preferred language, will be of immense value in constructing the syntax, domain and SMTP verification checks all within a single pass. In addition to my technical expertise, I am well-acquainted with the importance of accuracy, speed, and graceful error handling; all essential features you prioritize. I'm comfortable working with complementary solutions like dnspython and smtplib for reliable DNS look-ups and SMTP handshakes. Moreover, my proficiency in Node.js allows me to build a clean JSON API mirroring your platform's functionality allowing for easy integration while my front-end JavaScript skill guarantees a responsive and user-friendly web interface. Finally, I always ensure thorough documentation plus upon project completion I would be happy to provide both source code in a private repo and provide a short hand-off call or video walkthrough ensuring that your team can easily deploy it on your own server (Docker is preferred). Let me bring your email verification vision to reality! Thanks!
$155 USD på 5 dage
7,2
7,2

I can build a complete email verification platform that performs syntax validation, DNS/domain checks, and real SMTP verification in a single pass, returning clear valid / invalid / unknown statuses with fast response times and proper timeout handling. The system will include a real-time web interface (paste or CSV upload with progress tracking), a clean JSON REST API, and Docker-based deployment for easy self-hosting. I’ll implement robust DNS lookups and SMTP handshakes with strict timeout controls so unreachable servers return “unknown” instead of failing. You’ll receive full source code in a private repo, clear documentation, a quick-start deployment guide, and a short handover walkthrough to ensure your team can operate and extend the platform confidently.
$320 USD på 4 dage
6,8
6,8

Hi there, I’ve carefully reviewed your requirements for a robust email verification platform that combines syntax, domain, and SMTP checks in a single seamless pass. I’m confident I can develop a fast, reliable solution with a clean web UI and JSON API, ensuring real-time progress updates and smooth error handling. - Develop a high-accuracy email validation engine using Python (dnspython, smtplib) or Node.js equivalents - Build a responsive web interface for bulk input and live status monitoring - Design a Dockerized deployment for quick, self-hosted installation - Provide comprehensive documentation and a hand-off walkthrough video **Skills:** ✅ Python & SMTP email verification (dnspython, smtplib) ✅ Node.js & API development for JSON REST services ✅ Docker containers for deployment ✅ Real-time web interface with progress updates ✅ Graceful timeout/error handling for unknown statuses **Certificates:** ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 I’m ready to start immediately and deliver a robust, well-documented platform within your timeline. What email list sizes do you anticipate processing at once, and are there any specific performance benchmarks you want to meet? Best regards,
$250 USD på 14 dage
6,7
6,7

Hi, I've carefully reviewed your project about creating a robust email verification platform, and I'm excited about the opportunity to work on this. I specialize in building reliable systems and have extensive experience with email validation and API development, ensuring that I can deliver exactly what you’re looking for. To meet your requirements, I will implement syntax, domain, and SMTP verification in one streamlined process, ensuring users receive instant and accurate status reports. I suggest using Python along with dnspython and smtplib to leverage their reliability for DNS look-ups and SMTP handshakes. The platform will feature a user-friendly web interface for real-time progress monitoring, a clean JSON API for future integrations, and comprehensive documentation, including a quick start guide for Docker deployment. You can expect a well-structured source code provided in a private repository along with a short hand-off call to ensure a smooth transition. Let's discuss how we can kick off this project efficiently. Thanks,
$250 USD på 14 dage
6,9
6,9

Hello Proposing a robust, complete, and lightning-fast email verification platform. I'll deliver an end-to-end solution for maximum deliverability, ensuring real-time accuracy and minimal bounce rates. Scalable, intuitive, and ready to enhance your email strategy quickly. Giáp Văn Hưng
$123 USD på 7 dage
6,7
6,7

Leveraging 15 years of industry experience as a Full-stack engineer, I promise to provide your project with the skillful mastery your platform requires. My aptness in backend development using languages such as PHP (Laravel, Symfony, CodeIgniter, Zend) and Node.js/Express.js aligns perfectly with your ideal skill set. Moreover, my skillset in Docker and Linux make me exceptionally capable of building a solution that fulfills your requirement of deploying it on your own server. I have a proven track record of building complex web applications efficiently and focusing on performance and security. These qualities perfectly suit the needs of your project. Additionally, I not only understand the importance of accuracy and speed but also prioritize graceful error handling just as you insisted on. Robustness doesn't just lie in delivering clean code - it is about ensuring scalability, high availability, and low maintenance costs - all aspects I've deeply integrated into my work over the years. In conclusion, I am genuinely passionate about building digital products that translate into a competitive advantage for clients, and your "Robust Email Verification Platform" project is no exception to that dedication. So let us come together to combine my experience and skills with your vision!
$70 USD på 3 dage
6,5
6,5

Hi there, I am excited about the opportunity to build your Robust Email Verification Platform. With extensive experience in API development and a deep understanding of email verification processes, I'm confident in delivering a solution that checks syntax, domain, and mail-server (SMTP) verification in a single pass, ensuring immediate feedback on email validity. 1. **Proven Experience**: I have successfully developed similar platforms that focus on accuracy and speed. For instance, I built an email validation service using Python with libraries like dnspython and smtplib, which resulted in 99% accuracy rates. 2. **Real-Time Processing**: I will ensure users can paste or upload lists while observing real-time progress through a user-friendly web interface. This feature enhances user satisfaction and productivity. 3. **Robust API & Documentation**: Developing a clean JSON API for future integrations is key, alongside comprehensive documentation and a quick start guide to aid rapid deployment on your server, preferably via Docker. I’m looking forward to discussing how we can create a solution that meets your requirements for accuracy, speed, and graceful error handling. Thanks,
$180 USD på 2 dage
6,5
6,5

Hello As per your project post, you are looking to build a Email Verification Platform that can accurately determine whether an email address is usable by performing syntax validation, domain verification, and SMTP level mail server checks in a single pass. The goal is to create a fast, reliable, and self hosted system with both web interface and API access, allowing your team and future integrations to verify email lists efficiently with clear status reporting. My approach will focus on building a high accuracy verification engine that performs syntax validation, DNS and MX record lookup, and SMTP handshake verification in an optimized workflow to deliver valid, invalid, or unknown results with minimal delay. I will develop a web interface that allows users to paste or upload bulk email lists and monitor verification progress in real time, along with a secure JSON API for automated integrations. I specialize in building SaaS platforms, backend verification systems, scalable APIs, and containerized deployments. My focus is on delivering reliable, production ready systems that maintain high performance, accuracy, and operational transparency. I am confident I can build a fast, accurate, and fully deployable email verification platform tailored to your needs. Let us connect to discuss your deployment environment and implementation roadmap. Best regards Nikita Gupta
$500 USD på 28 dage
6,4
6,4

Hello Carl J P., I checked your project, and it looks interesting. This is something we already work on, so the requirements are clear from the start. We mainly work on PHP, Python, Linux, Node.js, Docker, Web Development, SMTP, API Development We focus on making things simple, reliable, and actually useful in real life not overcomplicated stuff. Let’s connect in chat and see if we’re a good fit for this. Best Regards, Ali nawaz
$129 USD på 4 dage
6,3
6,3

Hello. I propose building a high-performance email verification platform that performs syntax, domain (DNS/MX), and SMTP validation in a single optimized pipeline to return fast and accurate “valid / invalid / unknown” results. The backend can be implemented using Python (FastAPI) with libraries such as dnspython and async SMTP handling for concurrent verification, or Node.js with equivalent async DNS and SMTP modules depending on your infrastructure preference. The system will use asynchronous processing with connection pooling and timeout controls to ensure speed, stability, and graceful error handling. A responsive web interface will allow users to paste or upload bulk lists, monitor verification progress in real time via WebSockets, and export results. A clean RESTful JSON API will mirror the web functionality to support external integrations and automation workflows. The platform will be containerized with Docker, including environment configuration, logging, and deployment documentation for seamless self-hosting. The architecture will include rate limiting, retry policies, and fallback logic so unreachable mail servers return “unknown” without blocking execution. All source code will be delivered via a private repository along with a deployment guide and a recorded or live hand-off walkthrough session. Regards, Justin.
$140 USD på 7 dage
6,0
6,0

Hello Carl J P., I am Maryam Abbas, a seasoned professional with 4 years of experience in PHP and Node.js. I have carefully reviewed the requirements for the robust email verification platform. To ensure accuracy and efficiency, I plan to implement a solution that includes syntax verification, domain verification, and mail-server (SMTP) verification in a single pass. I will create a user-friendly web interface for real-time progress tracking, a JSON API for seamless integrations, and provide clear documentation for easy deployment on your server (preferably using Docker). My track record of successful projects and positive client feedback make me the ideal candidate for this job. Please review my portfolio at https://www.freelancer.pk/u/maryam951 and let's discuss further details. Best regards, Maryam Abbas
$30 USD på 2 dage
5,8
5,8

Dear Carl J, I am a skilled developer with expertise in PHP, Python, Node.js, and web development. I understand the need for a robust email verification platform that can efficiently verify email addresses. My approach involves utilizing reliable libraries and services for DNS look-ups and SMTP handshakes to ensure accurate and quick verification results. I will create a user-friendly web interface for real-time progress tracking, a JSON API for seamless integrations, and provide clear documentation for easy deployment on your server using Docker. I prioritize accuracy, speed, and error handling to deliver a reliable solution. I invite you to discuss further how I can meet your email verification platform requirements. Best regards,
$140 USD på 7 dage
6,0
6,0

Warm Hello! A high-accuracy email verification platform with real-time results, single-pass checks, and Docker-ready deployment—built for speed and reliability. As a seasoned backend developer with over 9 years of experience, I specialise in building scalable validation systems using Python or Node.js with robust DNS and SMTP verification logic. Here’s how I can help: Implement single-pass syntax, domain (DNS/MX), and SMTP verification Return clear valid / invalid / unknown statuses with graceful timeout handling Build a real-time web interface for paste/upload with live progress tracking Develop a clean JSON API for seamless integrations Deliver Dockerised deployment, private repo, and concise documentation Do you expect bulk validation at scale (10k+ per run), and should we include rate limiting or queue workers for performance control?
$180 USD på 7 dage
5,8
5,8

I can build this as a fast, single-pass validation engine using Node.js or Python that runs syntax check, DNS/MX lookup, and SMTP verification together and returns a clear “valid / invalid / unknown” result. If a mail server times out or can’t be reached, it safely returns “unknown” without hanging or crashing. You’ll get a simple web interface to paste or upload lists with real-time progress, plus a clean JSON API that mirrors the same logic. The whole system will be Dockerized for easy deployment, with clear documentation and a short handoff walkthrough. Should this be optimized more for very high-volume bulk checks or for smaller, frequent batches?
$200 USD på 7 dage
6,3
6,3

Hi there, I’m Ahmed from Eastvale, California — a Senior Full-Stack Engineer with over 15 years of experience building high-quality web and mobile applications. After reviewing your job posting, I’m confident that my background and skill set make me an excellent fit for your project — Robust Email Verification Platform . I’ve successfully completed similar projects in the past, so you can expect reliable communication, clean and scalable code, and results delivered on time. I’m ready to get started right away and would love the opportunity to bring your vision to life. Looking forward to working with you. Best regards, Ahmed Hassan
$120 USD på 2 dage
5,2
5,2

Hello! I understand you need a robust Email Verification Platform that delivers quick and accurate results, evaluating email usability through syntax, domain, and mail-server checks. I will deliver a seamless solution leveraging Python with reliable libraries for DNS look-ups and SMTP handshakes, ensuring all checks run effortlessly in a single pass. Your platform will feature a user-friendly web interface for real-time tracking and a JSON API for future integrations. I'll provide comprehensive documentation and a quick start guide for easy deployment on your server via Docker. Accuracy, speed, and graceful error handling will be prioritized throughout development. Regards, Davide
$200 USD på 3 dage
5,0
5,0

With my 5 years of experience developing similar projects offsite, I understand the critical need for clean, accurate, and fast email verification. I will create a platform that seamlessly integrates syntax, domain, and mail-server verification in a single pass, ensuring a quick and clear “valid / invalid / unknown” status for each email address. My approach will prioritize reliable libraries, ensuring a scalable and efficient solution. I will deliver a user-friendly web interface for real-time progress tracking, along with a JSON API for seamless integrations. The platform will feature clear documentation and a quick start guide for easy deployment on your server, preferably using Docker. I guarantee accuracy, speed, and graceful error handling to enhance usability and performance. Let's discuss how I can provide you with a top-notch email verification platform. Regards, Chirag Pipal
$200 USD på 7 dage
4,7
4,7

I can build this platform using Python (FastAPI) for the backend and React for the real-time dashboard. I will use dnspython for MX lookups and smtplib for the handshake, wrapped in async tasks to keep it fast and non-blocking as you requested. Since direct SMTP checks depend heavily on your server's IP reputation, I'll ensure the error handling returns "unknown" gracefully instead of crashing. Do you already have a VPS with a clean IP ready for deployment?
$180 USD på 3 dage
4,8
4,8

Miami Lakes, United States
Betalingsmetode verificeret
Medlem siden nov. 15, 2012
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