Skills
Cold Email Verifier
by Varnan Tech
Verify lead email addresses, and guess missing ones from name and company, using ValidEmail or the open-source Reacher.
Our verdict
We have not reviewed Cold Email Verifier yet
No one at Enterprise DNA has checked this listing against its sources. The description comes from public listings gathered automatically. Any fact below shows where it came from and when it was last checked.
From the listing
About Cold Email Verifier
A skill from the OpenDirectory collection that processes a CSV of leads. Where only first name, last name and company are given, it looks up the company domain, generates the common address formats and checks which one is deliverable through ValidEmail.co or a self-hosted Reacher engine. It writes the verified results back to a file.
Best for
Sales and growth teams preparing lead lists
Use cases
- Clean a lead list before an outbound campaign
- Find the likely address for a prospect when only name and company are known
- Check deliverability with an open-source engine you host yourself
Notes
Why it matters
Sending to bad addresses hurts deliverability for every later email. Verifying first protects the sending domain, and this skill turns that into one step on a CSV.
Source
- Skill file: skills/cold-email-verifier/SKILL.md in Varnan-Tech/opendirectory.
- Repository: 686 GitHub stars, MIT licence. Checked 24 Oct 2026 through the GitHub API.
- Last change to the skill: 10 Jun 2026.
- This page was written from the skill's own SKILL.md. It is not an Enterprise DNA source review and the skill has not been installed or tested by us.
Pros
- Works from names and companies, not just existing emails
- Choice of a paid API or self-hosted Reacher
- Batch CSV in, CSV out
Cons
- Guessing addresses and emailing them may breach anti-spam and privacy law in some countries, so check the rules where you sell
- ValidEmail is a paid service
Key facts
What we have checked
Not checked yet. Dated facts such as prices, releases and repository activity appear here once we have confirmed them from a source.
Health and security
Is Cold Email Verifier looked after, and what do its setup files show
Security check static checks
90 out of 100
- Medium Sends data to a host outside the well-known APIs, host autocomplete.clearbit.com: skills/cold-email-verifier/scripts/email_verifier.py, line 96.
- Note 4 of 4 packages are not pinned to one version, so only the malicious packages list was checked for them, not version advisories.
Sources
Where this comes from
No sources recorded yet. Each source we check is listed here with the date we checked it.
A source shows what was published when we checked it. It does not certify security, performance or a working installation. Read our method.
Changelog
What changed
No changes recorded yet. Releases, price changes and deprecations appear here, with their dates, once we track them for this record.
Pairs with
Other entries in the index that connect to this one. Click through to see the chain.
email-concierge
anbeime
收录最全、更新最快的技能Skills商店：精选原创技能包（涵盖文档处理、内容创作、编程开发、机器学习、自动化工作流），全部打包好可直接安装使用！同时自动抓取GitHub上万个Skills项目，按分类、更新时间、Star数量整理。The most comprehensive and frequently updated AI Agent skill libra
emails
coreyhaines31
Marketing skills for Claude Code and AI agents. CRO, copywriting, SEO, analytics, and growth engineering.
gws-gmail-send
googleworkspace
Google Workspace CLI — one command-line tool for Drive, Gmail, Calendar, Sheets, Docs, Chat, Admin, and more. Dynamically built from Google Discovery Service. Includes AI agent ski
Deep Research Skill
Community
Community-maintained deep-research skill for Claude. Plan, search, synthesize, cite. The discovery loop, packaged.
Get the free Developer’s Field Guide
A 27-page field guide to the AI coding workflow with Claude. Claude Code, MCP servers, the prompt patterns that work, and what to delegate. Free.
Enter your work email. We send it straight over, plus a few short notes worth knowing. Unsubscribe any time.