mailcheck

Verify that email addresses belong to real people using lightweight web + LLM signals. Upload/paste lists, run concurrent checks, and export annotated results.

What it does

• Upload CSV/JSON or paste text; inline edit and delete rows
• Jobs sidebar with autosave (localStorage)
• Per‑email verification with concurrency and live row updates
  • Syntax check (invalid → spam)
  • Academic domain detection (institution annotation)
  • Role/alias heuristic (flags generic addresses)
  • Web + LLM assessments consolidated by a final judge into one decision
• Export CSV/JSON (preserves original columns + bg_* fields)

Statuses

• person_high
• person_low
• person_none
• spam

Requirements

• Deno 1.40+
• Groq API key

Run locally

deno run -A main.js

Open http://localhost:8000. If the server doesn’t have GROQ_API_KEY, set a key in the UI.

Environment

• GROQ_API_KEY: Groq key (server). The UI also supports a per‑user key.

API

• POST /api/check/background
  • body: { email: string, systemPrompt?: string, userApiKey?: string }
  • returns: { email, status, message, fields }

Notes

• Focuses on real‑person verification, not SMTP deliverability.
• The UI is a thin client over the API—use the endpoint directly if preferred.

Powered by Groq — get a key at https://groq.com.