IN THE FIELD GUIDE
Emailkind
emailkind.com
EmailKind is a REST API that classifies email addresses by provider and type, distinguishing business, personal, disposable, and other categories. It identifies exact email providers like Google Workspace, Microsoft 365, Zoho, and 150+ others, and enriches company data from domains using SSL certificates, RDAP, and website metadata.
THE PRODUCT, BEYOND THE PITCH
Editorially reviewed · Sources checked Oct 5, 2026
A good fit for
- Developers and businesses needing detailed email classification and enrichment for signup validation, CRM enrichment, and marketing segmentation.
Know the limitations
- EmailKind does not perform email verification (checking mailbox existence) but focuses on classification using passive DNS analysis without sending emails.
- When SPF records do not disclose mailbox providers behind security gateways, the mailbox provider field is omitted rather than guessed.
What you can do
- Qualify B2B signups by routing only business emails to sales and skipping free-tier signups automatically.
- Auto-fill company names in CRMs by populating company data behind any business email without manual lookup.
- Block risky signups by rejecting disposable, role, and free-email addresses at registration using a database of 90,000+ disposable domains.
- Spot enterprise leads by detecting security gateways like Proofpoint, Mimecast, and Barracuda and identifying mailbox providers behind them.
Features
- Provider detection for 150+ email services including Google Workspace, Microsoft 365, Zoho, Fastmail, OVH, and others.
- Type classification categorizes emails as business, personal, disposable, education, hosting, or self-hosted with boolean flags and confidence scores.
- Company enrichment resolves custom domains to company names via SSL certificates, RDAP, and website metadata without third-party tools.
- Batch processing supports CSV uploads with up to 10,000 emails and downloadable classified results.
- Custom rules allow overriding classifications for specific domains or MX patterns.
Integrations
Not confirmed yet.
Platforms & data export
Not confirmed yet.
THE COST FOR YOUR TEAM
Go beyond the starting price.
Published plan prices for your team size and usage. Results update as you type. Taxes, currency conversion and unlisted add-ons are excluded, and anything the source did not state is called out rather than guessed.
Cheapest fit for 1 person, all 1 tools
$0.00/month
$0.00 a year on these plans.
| Tool / plan | Monthly | Per year | What this assumes |
|---|---|---|---|
FreeCheapest fit Flat subscription | $0.00 | $0.00 | Automatically extracted from the linked pricing source. Seat allowances, usage limits, taxes and terms are not confirmed — check them with the provider. |
Starter Flat subscription | $14.00 | $168.00 | Automatically extracted from the linked pricing source. Seat allowances, usage limits, taxes and terms are not confirmed — check them with the provider. |
Growth Flat subscription | $34.00 | $408.00 | Automatically extracted from the linked pricing source. Seat allowances, usage limits, taxes and terms are not confirmed — check them with the provider. |
Scale Flat subscription | $79.00 | $948.00 | Automatically extracted from the linked pricing source. Seat allowances, usage limits, taxes and terms are not confirmed — check them with the provider. |
A practical workflow
- Create an account at emailkind.com/register to get a free API key with 100 requests per month.
- Use the API key to make classify requests via cURL or SDKs by sending an email or domain to the /v1/classify endpoint.
- Read the JSON response to get provider, classification flags, confidence score, and optionally company enrichment data.
Based on the sources below. Editorial review does not imply hands-on product testing.
Alternatives to explore
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