Contact person: Brand-Specific Email Checker Development

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Location: Bokaro, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I need a compact tool that can tell me, in real time, whether a lead’s email address is recognised as an existing account on eBay, Venmo, Norton, McAfee, Netflix, Coinbase, Robinhood, Bank of America, and Huntington. The goal is simple: segment my marketing lists more intelligently, so only people who actually use these services receive tailored campaigns.

Accuracy expectations are at the “standard” level—no mailbox digging, just the same confirmation a public “forgot-password” flow would return. The response I want is a clean valid/invalid per brand.

The solution must slot straight into my own applications, so a lightweight REST endpoint or a callable script (Python or Node.js work best on my end) is ideal.

Key points
• Strictly for compliant marketing segmentation
• Must complete a lookup in under 2-3 seconds, even when batching up to 100,000 addresses
• Respect rate limits and avoid captchas or lockouts on the target platforms

Deliverables
1. Source code and installation steps for Ubuntu 22.04
2. README detailing environment variables, throttling strategy, and any brand-specific nuances
3. Two-week post-delivery bug-fix support

Let me know the tech stack you’d prefer and point me to any similar validation work you’ve done so I can move quickly on awarding the project." (client-provided description)