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High-volume engine
Bounded memory, parallel DNS, progress reporting, pause, resume, and cancellation keep the Windows interface responsive.
Native Windows email infrastructure classifier
Sort millions of emails into the right provider folders.
Best Sorter Pro separates consumer mail, business-hosted mail, Microsoft 365, Exchange and OWA-related environments, secure gateways, regional providers, and unknown infrastructure without guessing.
✓ ISP-organized ZIP✓ TXT and enriched CSV✓ One-PC HWID license
Fast, evidence-based classification
Made for serious lists and clear results.
Large files stream from disk. Each unique domain is resolved only once, results are cached, and receiving infrastructure is classified using maintained provider fingerprints.
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Provider intelligence
Separates Gmail from Google Workspace, Yahoo consumer from Yahoo business, Outlook.com from Microsoft 365, and more.
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Honest confidence
MX evidence, environment, and confidence accompany every result. Uncertain infrastructure remains Unknown or Unverified.
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Organized exports
Receive one ZIP containing ISP and category folders, emails.txt, domains.txt, enriched CSV results, and evidence.
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Domain cache
Recent classifications are reused automatically so repeated domains finish without another DNS wait.
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Windows-native workflow
Dedicated provider database, cache, history, settings, and license pages in a responsive dark interface.
Simple yearly licensing
One computer. One year. No confusion.
Every additional computer requires its own Best Sorter license.
ONE PC • ONE YEAR
Best Sorter Pro Yearly
One-year Best Sorter Pro license for one Windows computer, updates, and standard support.
$299 USD / year
- ✓ Complete Best Sorter Windows application
- ✓ Unlimited local sorting jobs
- ✓ ISP-separated ZIP, TXT, and CSV exports
- ✓ Provider-rule and application updates
- ✓ Standard email support
- ✓ License binds to the first computer HWID