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Email Domain Extractor

Enterprise-grade email list analyzer. Extract domains, classify business vs. free providers, visualize distribution, and export clean data for B2B lead generation.

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Category Text & Content

Source Data

Analysis Report

Total Emails 0
Unique Domains 0
Business Ratio 0%
Domain ↑↓ Count ↑↓ Type ↑↓ Links
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About

In the high-stakes world of B2B marketing and cybersecurity, the purity of your dataset determines the success of your campaign. The Email Domain Extractor is not merely a string splitter; it is a semantic analysis engine designed to segregate high-value business targets from noise.

Standard extractors fail to distinguish between a qualified lead (e.g., user@company.com) and a low-intent signup (e.g., user@gmail.com). This tool utilizes a heuristic database of over 500 known providers to automatically tag domains as Business, Free, Disposable, Education, or Government.

Use this tool to audit subscriber lists, identify top corporate accounts in your funnel, and prepare clean data for Account-Based Marketing (ABM) execution. It handles duplicate removal, subdomain merging logic, and frequency analysis in real-time.

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Formulas

The extraction and classification process follows a strict set logic mapping input emails set E to a unique domain set D.

{
extract(e) = d where e = user + @ + dclassify(d) = {
FREE if d ∈ SfreeTEMP if d ∈ StempGOV if tld(d) ∈ TgovBIZ otherwise

Where Sfree represents the static set of known public providers and Tgov represents restricted Top-Level Domains.

Reference Data

CategoryDefinitionExamplesAction Logic
BusinessCorporate or private domains not found in free/disposable registries.tesla.com, mckinsey.comHigh Priority: Route to Sales
Free ProviderPublic email services available to anyone without cost.gmail.com, outlook.com, yahoo.frLow Priority: Nurture Campaign
DisposableTemporary inboxes used to bypass registration walls.mailinator.com, 10minutemail.comBlock: Delete immediately
EducationAcademic institutions and universities.mit.edu, ox.ac.ukSegment: Student/Research discounts
GovernmentFederal, state, or military entities.nasa.gov, army.milCompliance: Special handling required

Frequently Asked Questions

By default, the tool performs "Strict Extraction", treating "mail.google.com" and "google.com" as distinct entities. If you enable the "Merge Subdomains" toggle, our heuristic algorithm attempts to strip prefixes (mail, smtp, server1) to aggregate counts under the root domain.
No. All processing occurs locally within your browser's JavaScript engine. Your data never leaves your device, ensuring full GDPR/CCPA compliance for sensitive customer lists.
Yes. You can copy the results directly to your clipboard or download a CSV file. The export includes the domain, frequency count, and the classification tag.
The tool uses a database of over 500 common providers. If a business uses a whitelabeled version of a free provider on a standard domain (e.g., a generic ISP domain), it may be flagged. However, custom domains (e.g., yourcompany.com) managed by G-Suite will correctly be identified as Business.