Indexé dans Registry

cold-email-verifier

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.

Examiner la source Voir sur GitHub

Prix non confirmé★ 635 Stars GitHubRegistre mis à jour · 5 sept. 2026agent-skill

Vue d’ensemble

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.

Lire la documentation complète

Documentation source, pas des instructions pour ce site. Vérifiez les permissions avant d’exécuter des commandes.

Cold Email Verifier and Guesser (Public)

Overview

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.

The Email Guessing Engine

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:

Look up the company's official domain using the free Clearbit API.
Clean the names (removing punctuation) and generate the 3 most common corporate email formats:

Verification Methods (Choose Your Engine)

Once the emails are guessed, the script must verify them. We support three methods:

1. ValidEmail.co API (Highly Recommended)

The absolute best option. ValidEmail.co provides enterprise-grade accuracy, bypasses strict catch-all servers, and handles IP reputation for you.

Free Tier: They offer a generous free tier (50 free verification credits on signup) to get you started!
How to use: Go to validemail.co, create an account, get your API key, and run the script in --mode validemail.

2. Reacher Open Source (Self-Hosted)

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).

GitHub Repo: reacherhq/check-if-email-exists
Important: Your cloud provider MUST have outbound Port 25 open.
How to use: Host the docker container, then run the script using --mode reacher-http --reacher-url "http://<YOUR_SERVER_IP>:8080/v0/check_email".

3. Reacher Local CLI (Not Recommended / Unreliable)

You can run the Reacher CLI directly on your laptop.

Warning: Residential ISPs globally block Port 25 to prevent spam. Furthermore, major mail servers (Microsoft, Google) will automatically reject SMTP handshakes from residential Wi-Fi IP addresses.
Result: You will get massive amounts of false negatives and timeouts. Use ValidEmail.co instead.

How to Execute

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"

CSV Format Requirements

The input CSV must contain these exact column headers (or their specific mappings):

First Name
Last Name
Company Name
Domain (Optional - highly recommended for accuracy)

Voir la source ↗

Métadonnées du fichier

name: cold-email-verifier
description: 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.

Voir le texte original

---
name: cold-email-verifier
description: 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.
---

# Cold Email Verifier and Guesser (Public)

## Overview
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.

## The Email Guessing Engine
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:
1. Look up the company's official domain using the free Clearbit API.
2. Clean the names (removing punctuation) and generate the 3 most common corporate email formats:
- first@domain.com
- first.last@domain.com
- firstlast@domain.com

## Verification Methods (Choose Your Engine)
Once the emails are guessed, the script must verify them. We support three methods:

### 1. ValidEmail.co API (Highly Recommended)
**The absolute best option.** ValidEmail.co provides enterprise-grade accuracy, bypasses strict catch-all servers, and handles IP reputation for you.
- **Free Tier:** They offer a generous free tier (50 free verification credits on signup) to get you started!
- **How to use:** Go to [validemail.co](https://validemail.co), create an account, get your API key, and run the script in --mode validemail.

### 2. Reacher Open Source (Self-Hosted)
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).
- **GitHub Repo:** [reacherhq/check-if-email-exists](https://github.com/reacherhq/check-if-email-exists)
- **Important:** Your cloud provider MUST have outbound Port 25 open.
- **How to use:** Host the docker container, then run the script using --mode reacher-http --reacher-url "http://<YOUR_SERVER_IP>:8080/v0/check_email".

### 3. Reacher Local CLI (Not Recommended / Unreliable)
You can run the Reacher CLI directly on your laptop.
- **Warning:** Residential ISPs globally block Port 25 to prevent spam. Furthermore, major mail servers (Microsoft, Google) will automatically reject SMTP handshakes from residential Wi-Fi IP addresses.
- **Result:** You will get massive amounts of false negatives and timeouts. Use ValidEmail.co instead.

## How to Execute
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"
`

## CSV Format Requirements
The input CSV must contain these exact column headers (or their specific mappings):
- First Name
- Last Name
- Company Name
- Domain (Optional - highly recommended for accuracy)

Examiner la source

Prix et coûts d’utilisation

Obtenir le skill: Prix non confirmé
L’utiliser: Prérequis non confirmés. Consultez les frais d’agent, d’API et de services à la source.
Licence: MIT
Prix non confirmé: Le prix n’est pas confirmé. Les liens existants vers les sources et l’installation restent disponibles.

Gratuit à obtenir ne signifie pas gratuit à utiliser. Le prix ne constitue pas une évaluation de sécurité. Soumettre un prix →

Source du skill enregistrée

Un chemin vers les instructions est enregistré. Cela ne constitue pas un test, une garantie de sécurité ou de compatibilité.

Réviser avant installation: Éviter l’installation automatique

Licence: MIT

Dependency or permission surface needs review
Permission surface may require sandboxing
Financial research output is not financial advice; require human review before any live investment decision
No explicit 'Limitations' section in SKILL.md, though limitations are mentioned inline.
Potential data privacy concern: the skill sends lead data to third-party services (Clearbit, ValidEmail) without explicit user consent or warning about data handling.
Financial research output is not financial advice; require human review before any live investment decision.
Quality score needs review
Permission surface needs review: secrets or environment access, shell or command execution
Dependency/runtime risk: command execution surface, credential or environment access
Permission surface: secrets or environment access, shell or command execution

Ouvrir l’audit complet

Les outils sont des indications de métadonnées, pas une compatibilité testée. Les prompts sont des suggestions.

Commencer par une petite tâche

1Lisez la source et confirmez entrées, résultats, dépendances et permissions.
2Demandez un plan à l’agent. Approuvez la configuration et les coûts avant un test isolé.
3Vérifiez résultats et fichiers modifiés. Signalez uniquement ce qui a été exécuté et conservez la révision source.

Vérifiez les dépendances, clés API et frais externes dans la source. Un dépôt public ne rend pas tous les services gratuits.

Source et conseils d’utilisation

Répertorié

Métadonnées et examens sont indicatifs. Popularité, découverte et exécution réussie sont des faits distincts.

Dépôt source: Varnan-Tech/opendirectory
Licence: MIT
Version: 1.0.0
Dernier push GitHub: 16 août 2026
Registre mis à jour: 5 sept. 2026
Chemin des instructions: skills/cold-email-verifier/SKILL.md @ 62e437ab1340

Version déclarée dans le registre ; vérifiez les versions de la source.

Qualité

72/100

Solide

Confiance

58/100

Do not auto-install

Audit

74/100

Revue nécessaire

Ouvrir l’audit complet Voir le rapport d’évaluation

Dependency or permission surface needs review
Permission surface may require sandboxing
Financial research output is not financial advice; require human review before any live investment decision
No explicit 'Limitations' section in SKILL.md, though limitations are mentioned inline.
Potential data privacy concern: the skill sends lead data to third-party services (Clearbit, ValidEmail) without explicit user consent or warning about data handling.
Financial research output is not financial advice; require human review before any live investment decision.
Quality score needs review
Permission surface needs review: secrets or environment access, shell or command execution
Dependency/runtime risk: command execution surface, credential or environment access
Permission surface: secrets or environment access, shell or command execution

Verified installs: —
Résultats: —

Copier ne signifie pas installer. Les compteurs nécessitent un rapport de réussite et ne garantissent pas la qualité globale.

Accès agent

L’API Registry fournit les signaux de décision, confiance, audit, cas d’usage et installation sans analyser l’interface.

Ouvrir l’API d’installation Format texte LLM Ouvrir Manifest Plan de résolution auto

Plus de détails

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}

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Créateur: Varnan-Tech
Source: Varnan-Tech/opendirectory
Indexé par: Index communautaire OpenAgentSkill

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