Cold Email Verifier

by Varnan-Tech

Cold Email Verifier is an Automation skill for Claude Code, published by Varnan-Tech in opendirectory.

621 stars66 forkson Varnan-Tech/opendirectoryAdded 2026/08/24+2% in starsRepository updated 2026/08/16

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Install in seconds

Install Cold Email Verifier

Copy Cold Email Verifier into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/Varnan-Tech/opendirectory/tree/main/skills/cold-email-verifier ~/.claude/skills/cold-email-verifier

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/Varnan-Tech/opendirectory.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/cold-email-verifier/SKILL.md in Varnan-Tech/opendirectory
Installs to: ~/.claude/skills/cold-email-verifier
Collection: One of 25 skills cataloged from this repository
Category: Automation — 1523 skills

What Cold Email Verifier does

Cold Email Verifier verifies guessed or existing business emails from a CSV and can enrich leads with company domains. Use it when you need to find likely addresses and check deliverability with ValidEmail.co or Reacher.

Cold Email Verifier is cataloged under Automation on DirSkills. Cold Email Verifier comes from a repository tagged agent-skills, gtm, hermes-agent, marketing-skills and openclaw-skills.

Documentation

README

Excerpt

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.

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Cold Email Verifier

What else does Varnan-Tech publish alongside Cold Email Verifier?
Cold Email Verifier is one of 25 skills that DirSkills catalogs from Varnan-Tech/opendirectory, the repository it ships in. Its siblings there include App Store Review Arbitrage, Blog Cover Generator and Brand Alchemy. Each one is a separate skill with its own page in this directory, installs the same way Cold Email Verifier does, and is maintained by Varnan-Tech in that same repository. The rest of the collection is listed on the Varnan-Tech/opendirectory page.
How does Cold Email Verifier compare to other Automation skills?
Cold Email Verifier ranks #1175 by stars among the 1523 Automation skills in this catalog. The most-starred ones next to it are Autonomous Loops, Autonomous Agent Harness and Automation Audit Ops. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Cold Email Verifier against them. Open each page to compare what they document and how they install.