Email Validator

Other

Validate email addresses with syntax checks (RFC 5322), MX record verification, disposable/temporary email detection, and common typo suggestions. Use when validating user signups, cleaning email lists, checking deliverability, or detecting throwaway addresses. Supports batch validation from file. No API keys required.

Install

openclaw skills install jrv-email-validator

Email Validator

Multi-layer email validation: syntax, DNS, disposable detection, typo correction.

Quick Start

# Validate a single email
python3 scripts/email_validate.py user@example.com

# Validate multiple emails
python3 scripts/email_validate.py user@gmail.com admin@company.org test@mailinator.com

# JSON output
python3 scripts/email_validate.py user@example.com --json

# Batch validate from file
python3 scripts/email_validate.py --file emails.txt

# Skip DNS checks (syntax + disposable only)
python3 scripts/email_validate.py user@example.com --no-dns

Validation Checks

Syntax — RFC 5322 compliance (local part, domain, length limits)
MX Records — DNS lookup to verify the domain accepts email
Disposable Detection — Flags 80+ known throwaway email providers
Typo Suggestion — Catches common misspellings (gmial.com → gmail.com)

Flags

--json — Machine-readable JSON output
--file, -f <path> — Read emails from file (one per line)
--no-dns — Skip MX record checks
--no-disposable — Skip disposable email check

Exit Codes

0 — All emails valid
1 — One or more emails invalid