Krainium/Email-validator-v2 ? reverse-engineered prompt

Build me a web app and simple CLI for checking whether email addresses are real and deliverable.

I want a clean dark themed site where I can paste in one email or upload a list, then see if each address looks valid, if the inbox exists, if it seems disabled, and whether it’s disposable. It should give fast results in real time, let me switch between automatic checking and specific checks for Gmail, Outlook, general mail, or disposable only, and show a nice results table with totals for valid, invalid, disposable, and errors. Add CSV export, drag and drop file upload, copy to clipboard, and friendly status badges.

Also include a Python backend that talks to the email checking service, plus a small CLI so I can run single checks or bulk checks from the terminal and export to CSV. Make it work without an API key in free mode, and support an optional key for more checks. If you need current docs for the frameworks, look them up online first.