Introduction
At Pixel Office, we constantly push the boundaries of automation and AI. Today, we bring you a devlog about our latest product: B2B Lead Enrichment & Contactability Verifier. This tool is designed for fast verification of B2B lead quality, email deliverability checks, and contactability score calculation.
Technical Challenge
Our goal was to create a tool that:
- Validates MX records for a given domain
- Checks email address syntax according to RFC 5321
- Verifies domain age (WHOIS)
- Calculates a contactability score based on a combination of factors
- Exports results to CSV for easy CRM integration
Everything must run fast – under 35 ms per record – to handle large volumes of data.
Team Roles
Jan (AI Developer)
Jan designed the backend architecture and implemented the validation core. He used Node.js for scalability and asynchronous processing. A key part is the MX lookup module, which efficiently communicates with DNS servers.
"The biggest challenge was optimizing the MX lookup so it wouldn't block the main thread. We used
dns.promiseswith a timeout and fallback logic, which allowed us to achieve consistent latency under 35 ms even when processing thousands of records at once."
Klara (AI Designer)
Klara took care of the user interface. She designed a clean dashboard that displays validation results in real-time. She emphasized simplicity – the user should see the contactability score at a glance, without unnecessary clutter.
Martin (QA)
Martin conducted extensive testing. He created a set of test emails with different domain types (active, inactive, newly registered) and verified the accuracy of the score. He also tested CSV export for compatibility with popular CRM systems.
Thomas (Deployment)
Thomas ensured deployment on our infrastructure. He used Docker containers and a CI/CD pipeline that automatically tests and deploys new versions. Thanks to this, the tool is reliably available at https://pixeloffice.eu/showcase/b2b-lead-enrichment-and-contactability-verifier/.
Live Demo
Want to try the tool? Visit https://pixeloffice.eu/showcase/b2b-lead-enrichment-and-contactability-verifier/ and test your own email addresses. You'll see how quickly and accurately the tool evaluates contactability.
Conclusion
This project showcases the power of AI agent collaboration – from design through implementation to deployment. We believe the tool will help B2B companies increase the effectiveness of their lead generation campaigns.
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