cold-email-verifier

Name: cold-email-verifier
Author: Varnan-Tech

25installs59forks

How to install cold-email-verifier?

varnan-tech/opendirectory/cold-email-verifier

$npx -y skills add Varnan-Tech/opendirectory --skill cold-email-verifier

Installs into the current project.

Summary

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.

Files · 1

View on GitHub

SKILL.md

1	# Cold Email Verifier and Guesser (Public)
2
3	## Overview
4	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.
5
6	It is designed to solve the problem of missing contact info by guessing core email angles and then checking which one is real.
7
8	## The Email Guessing Engine
9	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:
10	1. Look up the company's official domain using the free Clearbit API.
11	2. Clean the names (removing punctuation) and generate the 3 most common corporate email formats:
12	- first@domain.com
13	- first.last@domain.com
14	- firstlast@domain.com
15
16	## Verification Methods (Choose Your Engine)
17	Once the emails are guessed, the script must verify them. We support three methods:
18
19	### 1. ValidEmail.co API (Highly Recommended)
20	The absolute best option. ValidEmail.co provides enterprise-grade accuracy, bypasses strict catch-all servers, and handles IP reputation for you.
21	- Free Tier: They offer a generous free tier (50 free verification credits on signup) to get you started!
22	- How to use: Go to [validemail.co](https://validemail.co), create an account, get your API key, and run the script in --mode validemail.
23
24	### 2. Reacher Open Source (Self-Hosted)
25	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).
26	- GitHub Repo: [reacherhq/check-if-email-exists](https://github.com/reacherhq/check-if-email-exists)
27	- Important: Your cloud provider MUST have outbound Port 25 open.
28	- 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".
29
30	### 3. Reacher Local CLI (Not Recommended / Unreliable)
31	You can run the Reacher CLI directly on your laptop.
32	- 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.
33	- Result: You will get massive amounts of false negatives and timeouts. Use ValidEmail.co instead.
34
35	## How to Execute
36	First, ensure dependencies are installed: pip install -r requirements.txt
37
38	To use ValidEmail.co (Recommended):
39	`ash
40	export VALIDEMAIL_API_KEY="your_api_key_here"
41	python scripts/email_verifier.py --input leads.csv --output verified_leads.csv --mode validemail
42	`
43
44	To use Self-Hosted Reacher:
45	`ash
46	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"
47	`
48
49	## CSV Format Requirements
50	The input CSV must contain these exact column headers (or their specific mappings):
51	- First Name
52	- Last Name
53	- Company Name
54	- Domain (Optional - highly recommended for accuracy)

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cold-email-verifier

25installs59forks

View on GitHub

How to install cold-email-verifier?

varnan-tech/opendirectory/cold-email-verifier

$npx -y skills add Varnan-Tech/opendirectory --skill cold-email-verifier

Installs into the current project.

Summary

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.

Files · 1

View on GitHub

SKILL.md

1	# Cold Email Verifier and Guesser (Public)
2
3	## Overview
4	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.
5
6	It is designed to solve the problem of missing contact info by guessing core email angles and then checking which one is real.
7
8	## The Email Guessing Engine
9	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:
10	1. Look up the company's official domain using the free Clearbit API.
11	2. Clean the names (removing punctuation) and generate the 3 most common corporate email formats:
12	- first@domain.com
13	- first.last@domain.com
14	- firstlast@domain.com
15
16	## Verification Methods (Choose Your Engine)
17	Once the emails are guessed, the script must verify them. We support three methods:
18
19	### 1. ValidEmail.co API (Highly Recommended)
20	The absolute best option. ValidEmail.co provides enterprise-grade accuracy, bypasses strict catch-all servers, and handles IP reputation for you.
21	- Free Tier: They offer a generous free tier (50 free verification credits on signup) to get you started!
22	- How to use: Go to [validemail.co](https://validemail.co), create an account, get your API key, and run the script in --mode validemail.
23
24	### 2. Reacher Open Source (Self-Hosted)
25	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).
26	- GitHub Repo: [reacherhq/check-if-email-exists](https://github.com/reacherhq/check-if-email-exists)
27	- Important: Your cloud provider MUST have outbound Port 25 open.
28	- 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".
29
30	### 3. Reacher Local CLI (Not Recommended / Unreliable)
31	You can run the Reacher CLI directly on your laptop.
32	- 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.
33	- Result: You will get massive amounts of false negatives and timeouts. Use ValidEmail.co instead.
34
35	## How to Execute
36	First, ensure dependencies are installed: pip install -r requirements.txt
37
38	To use ValidEmail.co (Recommended):
39	`ash
40	export VALIDEMAIL_API_KEY="your_api_key_here"
41	python scripts/email_verifier.py --input leads.csv --output verified_leads.csv --mode validemail
42	`
43
44	To use Self-Hosted Reacher:
45	`ash
46	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"
47	`
48
49	## CSV Format Requirements
50	The input CSV must contain these exact column headers (or their specific mappings):
51	- First Name
52	- Last Name
53	- Company Name
54	- Domain (Optional - highly recommended for accuracy)

People who liked this also viewed

6 picks

Type