mcpbeat

Email Validator

guia-matthieu/email-validator

Validate and clean email lists. Use when: cleaning email lists before campaigns; validating signup emails; removing invalid addresses; checking for disposable emails; improving deliverability

2k tokens
context cost
the whole folder, loaded on every use
3
files
ships runnable scripts
0
copies elsewhere
how many repositories repackaged it
145
stars on the repo
on the repository, not the skill itself

Install

one command, takes just this skill from the repository 
npx skills add https://github.com/guia-matthieu/clawfu-skills --skill email-validator

What comes with it

5 590 bytes besides the instruction
scripts/main.py
scripts/requirements.txt

The instruction itself

8 sections, as written by the author

Email Validator

> Validate email addresses and clean lists to improve deliverability and reduce bounces.

What Claude Does vs What You Decide

| Claude Does | You Decide |

|-------------|------------|

| Structures analysis frameworks | Metric definitions |

| Identifies patterns in data | Business interpretation |

| Creates visualization templates | Dashboard design |

| Suggests optimization areas | Action priorities |

| Calculates statistical measures | Decision thresholds |

Dependencies

pip install email-validator dnspython click

Commands

python scripts/main.py validate [email protected]
python scripts/main.py batch emails.csv --column email --output clean.csv
python scripts/main.py clean emails.txt --remove-disposable

Skill Boundaries

What This Skill Does Well

  • Structuring data analysis
  • Identifying patterns and trends
  • Creating visualization frameworks
  • Calculating statistical measures

What This Skill Cannot Do

  • Access your actual data
  • Replace statistical expertise
  • Make business decisions
  • Guarantee prediction accuracy

Skill Metadata

  • Mode: centaur
category: email-tools
dependencies: [email-validator, dnspython]
difficulty: beginner

How to use it

Copy the folder

Take guia-matthieu/email-validator from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.

Install what it needs

The instructions reference pip. Without those the skill loads but fails at the first command.