Email Verifier

$9.99

Python script that verifies email addresses via SMTP handshake, MX record lookup, and syntax validation. Catch bad emails before they bounce. Runs on Python 3.10+ stdlib only — no pip installs needed.

• RFC 5322 email syntax validation with detailed error messages
• MX record lookup and priority-based server selection
• SMTP handshake verification (HELO, MAIL FROM, RCPT TO)
• Disposable email domain detection (built-in blocklist)
• Role-based address detection (info@, admin@, etc.)
• Bulk verification with CSV/TXT input support
• Configurable timeout and retry settings
• JSON and CSV output formats

# Verify a single email
python email_verifier.py --email user@example.com

# Bulk verify from a file
python email_verifier.py --file emails.txt --output results.json

# With custom timeout
python email_verifier.py --file emails.txt --timeout 10 --retries 2