smtp-checker

Find existing email addresses by nickname using API/SMTP checking methods without user notification. Please, don't hesitate to improve cat's job! 🐱🔎 📬

Improved SMTP Checker / SMTP Cracker with proxy-support, inbox test and many more features.

Perfect scripts for all the hustle we have with mass-mailing

[NEW] : Simple Mail Transfer Protocol (SMTP) CHECKER - CRACKER Tool V2

SMTP and IMAP checker / cracker for mailpass combolists with a user-friendly GUI, automated inbox test and many more features.

CLI to verify an if an email address is deliverable. Uses SMTP to validate email addresses without sending an email.

All-in-one mailing tool.

Disclaimer: This tool is intended solely for authorized penetration testing. Unauthorized usage is prohibited and may be illegal.

MASS SMTP VALID INVALID CHECKER.

A tool to check the correctness of email and password

A repository for business startups to grow their customers and marketing

A SMTP Checker / SMTP Cracker with SOCKS support and e-mail delivery test (inbox check) for mailpass combolists.

A powerful command-line tool for verifying email addresses with dual operation modes: API integration with VerifyRight or standalone verification.

smtp checker by rajexploit404

Advanced SMTP penetration testing framework featuring AI-driven anomaly detection, 2026 CVE database, multi-threaded brute force, email harvesting, TLS certificate analysis, SPF/DKIM/DMARC validation, and interactive TUI. Gray hat tool for professional security assessments and bug bounty hunting.

V2 of SMTP Checker

A real time email verifier with → email syntax, SMTP, inbox exists, catch-all and mx records checks.

📨 A simple CLI and Dockerized tool for checking disposable email addresses — supports individual or batch checks, scheduled via cron with automatic domain list updates.