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0.15¢ per email12 datapoints
Email Verification API
Check whether email addresses can receive mail. One row per address with a valid, invalid, risky or unknown verdict, a deliverability score and the checks behind it.
Sample
Sample data
Check whether email addresses can receive mail: a verdict, a 0-100 score and the syntax, domain, mail server, mailbox, catch-all and disposable checks for each address.
| # | Email | Status | Score | Reason | Syntax Valid | Domain Exists | MX Found | SMTP Accepted | Is Catch All | Is Disposable | Is Free Email Service | MX Records |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | risky | 75 | Catch-all domain — delivery not guaranteed | true | true | true | true | true | false | false | ||
2 | valid | 100 | Email address is valid and deliverable | true | true | true | true | false | false | false | ||
3 | valid | 100 | Email address is valid and deliverable | true | true | true | true | false | false | false | ||
4 | valid | 100 | Email address is valid and deliverable | true | true | true | true | false | false | false | ||
5 | risky | 70 | Catch-all domain — delivery not guaranteed | true | true | true | true | true | false | false | ||
6 | invalid | 0 | Mailbox does not exist | true | true | true | false | false | false | true | ||
7 | invalid | 0 | Mailbox does not exist | true | true | true | false | false | false | true | ||
8 | invalid | 10 | No MX records found for domain | true | true | false | — | false | false | false | — | |
9 | invalid | 0 | Mailbox does not exist | true | true | true | false | false | true | false | ||
10 | unknown | 60 | SMTP port 587 blocked or connection refused by | true | true | true | — | false | false | false |
Playground
Run this API
Input Form
Fill in the fields below or .
0.15¢ per email
Est. up to$0.00151 emails
live
curl -X POST "https://api.mindcase.co/v1/data/email/verify/run?wait=true" \
-H "Authorization: Bearer mk_live_YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"params": {
"emails": []
}
}'Edit the form to update this live.
Overview
About Email Verification API
The Email Verification API checks whether email addresses can receive mail. Send a list of addresses and get one row per address with a verdict (valid, invalid, risky or unknown), a 0 to 100 deliverability score and a plain-English reason, plus the checks behind it: syntax, whether the domain exists, its mail servers, whether the mailbox accepts mail, catch-all, disposable and free email service.
Built for growth teams cleaning a list before a campaign, sales ops teams keeping CRM contacts sendable, and product teams screening signups for throwaway addresses. Up to 5,000 addresses per request, returned as JSON or CSV.
Real-time dataSelf-servePay per resultZero setup time
Examples
Use cases
A few common ways teams put Email Verification API to work. Copy a prompt below to try it yourself.
Clean a list before sending
Drop invalid and risky addresses before a campaign so bounces do not hurt your sender reputation.
Verify these 2,000 addresses from our newsletter list
Screen new signups
Flag disposable and nonexistent addresses at signup so trials go to real people.
Check whether these 40 signups from today use disposable addresses
Keep CRM contacts sendable
Re-check contacts you have not emailed in months and mark the ones whose mailbox no longer exists.
Which of these 300 CRM contacts can still receive mail
Check one address
Confirm a single address before you send an important email or add it to a sequence.
Is the press contact at Stripe a real mailbox
Get started
Ready to verify emails?
Sign up to run live queries against Email Verification API via chat, form, or API.
FAQ
Frequently asked questions
- What does a risky verdict mean?
- The address could not be confirmed either way. Most often the domain is catch-all, which means its mail server accepts mail for any address, so a real mailbox and a made-up one look the same. Many company domains answer this way. Treat risky addresses with care on a large send.
- How fresh is the data?
- Live on every run. Each address is checked against its domain and mail servers when you run the request; nothing is served from a cache.
- Can I verify multiple emails in one run?
- Yes. Pass an array of up to 5,000 addresses per request and split longer lists across requests. Repeated addresses are checked once.
- How do I integrate with Zapier, n8n, Google Sheets, or Airtable?
- Call the API from any tool that can send an HTTP request, or download the results as CSV and import them. Each row is keyed by the email address, so you can join the verdict back onto your own list.
- What fields are returned?
- Email, status, score, reason, syntax valid, domain exists, MX found, SMTP accepted, catch-all, disposable, free email service and the domain's MX records. To find an address from a LinkedIn profile instead, use the LinkedIn Email API.
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