Features

Verification

• Email syntax and domain-format checks
• Username and domain heuristics
• Role-mailbox, typo, trap-keyword, and disposable-domain signals
• Official signed rules and local custom rules
• MX lookup in DNS mode
• SMTP greeting, HELO, sender, and recipient probing in SMTP PRO
• Catch-all and anti-enumeration probing with a random recipient
• Optional proxy-pool routing for network checks

Single and batch workflows

• Direct single-address verification
• TXT and CSV list import
• Column mapping for CSV files
• Long-running task progress and speed
• Pause, resume, and stop controls
• Persistent task history
• Result filtering and detail inspection
• Incremental processing suited to large lists

Explainable outcomes

Every completed record includes a status, numeric risk, primary reason, and—when applicable—a list of risk signals. Strong invalid findings stop unnecessary later checks, while soft-risk findings remain visible even if a later network test succeeds.

Rules and policy

• Locally managed block and risky rules
• Signed official rule package for Enterprise
• Rule enablement and update lifecycle
• Risk filters for creating audience-specific exports

Reports and export

• Aggregate list-quality view
• Distribution of valid, invalid, risky, and unknown records
• Reason and risk analysis
• Filtered result export
• Report export for review or handoff

Desktop operations

• Chinese and English interface
• Configurable concurrency, timeouts, and verification defaults
• Local application data and task history
• License and plan status
• In-app update checks
• Safe diagnostics for troubleshooting

Next: compare validation methods.