Use when the user wants to verify cold emails, enrich a lead list, or autonomously guess email addresses from a CSV using ValidEmail.co or the open-source Reacher engine.
把这段话发给 Claude Code、Codex 或 Cursor。智能体会先检查安全性，你确认后才安装。
读取 https://funcoding.ai/skills/varnan-tech/opendirectory/cold-email-verifier/install.md ，按里面的步骤帮我安装这个 Skill。
This skill autonomously processes a CSV of leads (containing First Name, Last Name, and Company Name), discovers their corporate domain, generates professional email permutations, and strictly verifies their deliverability.
It is designed to solve the problem of missing contact info by guessing core email angles and then checking which one is real.
You don't need to provide emails in your CSV! If the CSV only contains First Name, Last Name, and Company Name, the script will automatically:
Once the emails are guessed, the script must verify them. We support three methods:
The absolute best option. ValidEmail.co provides enterprise-grade accuracy, bypasses strict catch-all servers, and handles IP reputation for you.
If you want a 100% free, open-source solution, you can host the Reacher backend yourself on a cloud provider (like AWS, GCP, or Hetzner).
You can run the Reacher CLI directly on your laptop.
First, ensure dependencies are installed: pip install -r requirements.txt
To use ValidEmail.co (Recommended):
ash export VALIDEMAIL_API_KEY="your_api_key_here" python scripts/email_verifier.py --input leads.csv --output verified_leads.csv --mode validemail
To use Self-Hosted Reacher:
ash python scripts/email_verifier.py --input leads.csv --output verified_leads.csv --mode reacher-http --reacher-url "http://your-server-ip:8080/v0/check_email"
The input CSV must contain these exact column headers (or their specific mappings):
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