Email Validation
Validate email addresses for deliverability and spam
- Authentication
- API Key
- HTTPS
- Yes
- CORS
- Yes
- Category
- Data source
- public-apis + marcelscruz
- Documentation / URL
- https://www.abstractapi.com/email-verification-validation-api
Overview
Abstract’s Email Validation API checks deliverability — syntax, MX records, SMTP reachability, disposable domains, and abuse/risk signals — with a generous free tier. Auth is an API key (an invalid key returns 401, verified).
Quick Start
Validate (replace YOUR_KEY):
curl "https://emailvalidation.abstractapi.com/v1/?api_key=YOUR_KEY&[email protected]"{
"email": "[email protected]",
"autocorrect": "",
"deliverability": "DELIVERABLE",
"quality_score": "0.95",
"is_valid_format": { "value": true },
"is_disposable_email": { "value": false },
"is_smtp_valid": { "value": true },
"is_free_email": { "value": true }
}Authentication
- Register at abstractapi.com → free API key (emailed).
- Send it as the
api_keyquery parameter (invalid key → 401, verified).
Rate Limits & Notes
- Free tier: 100 validations/month (check current docs); paid plans scale.
- Key fields:
deliverability(DELIVERABLE/UNDELIVERABLE/RISKY),quality_score(0-1),is_smtp_valid,is_disposable_email. - Batch verification and webhooks are available on paid tiers.
FAQ
Is Abstract’s Email Validation free? Free tier: 100 validations/month; more is paid.
How do I get a key? Register at abstractapi.com — the key is emailed.
What’s the key field?
deliverability tells you if the address is reachable.
More in Email
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|---|---|---|---|---|
| Academic Email API This API allows you to verify whether an email belongs to a recognized educational institution | API Key | Yes | Unknown | ↗ |
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| Atomic Mail Email for AI agents with programmatic inbox creation and send/receive over the open JMAP standard | API Key | unknown | Unknown | ↗ |
| Atomic Mail Email for AI agents: programmatic inbox creation and send/receive over JMAP | API Key | Yes | Unknown | ↗ |
| Cloudmersive Validate Validate email addresses, phone numbers, VAT numbers and domain names | API Key | Yes | Yes | ↗ |