MultiSMTP Validator v1.0.0

MultiSMTP Validator v1.0.0

First stable release of MultiSMTP Validator — advanced multi-threaded SMTP server credential validation tool.

What's Included

• multi-smtp.exe — Standalone Windows x64 executable (no Node.js required)

Features

• Multi-threaded parallel validation (auto-scales to CPU cores)
• TCP pre-check before full SMTP handshake
• Real send-test authentication verification
• Categorized results: valid / invalid / reject / fail
• Supports smtp:// and smtps:// URL format
• Auto-saves results to Results/ directory

Usage

multi-smtp.exe

Then provide:

1. Path to SMTP list file (smtp://host:port:user:pass format)
2. Test email address for validation

Input Format

smtp://mail.example.com:587:user@example.com:password
smtps://secure.smtp.com:465:admin@secure.smtp.com:secretpass

Output Files

File	Description
Results/valid.txt	Valid SMTP servers
Results/invalid.txt	Invalid credentials
Results/reject.txt	Rejected by server
Results/fail.txt	Connection failures

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FOR AUTHORIZED USE ONLY — Use only on SMTP servers you own or have explicit permission to test.