What is SMTP Checker?
SMTP Checker 2025 is an advanced software tool designed to:
- Verify the validity of email accounts
- Test SMTP server configurations
- Identify vulnerable email servers
- Detect open relays (misconfigured servers that allow unauthorized email sending)
Key Features of SMTP Checker
Advanced Verification Engine
- Bulk email validation (100,000+ addresses/hour).
- Syntax, domain, and mailbox checks.
- Disposable email detection.
- Role account identification (admin@, info@, etc.).
Performance Optimization
- Multi-threaded processing.
- Cloud-based distributed checking.
- Intelligent rate limiting bypass.
Security Analysis Modules
- Open relay detection.
- TLS/SSL configuration testing.
- SPF/DKIM/DMARC validation.
- Greylisting behavior analysis.
Reporting & Analytics
- Real-time results dashboard.
- Detailed bounce reason categorization.
- API integration capabilities.
- Export formats (CSV, JSON, SQL).
