EmailB2B Email & Domain Scorer
Email verification: MX, disposable/free/role detection, typo fix and a keep/fix/drop action
apiKeyHTTPSCORS ?
Email
ContactLint API
Not rated yet · Be the first to rate itValidate email syntax, MX, disposable and role addresses with typo suggestions, plus phone numbers.
ContactLint API is a free Email API that requires apiKey authentication, is served over HTTPS and supports CORS, so it can be called from the browser.
- Authentication
- apiKey
- HTTPS
- Yes
- CORS
- Yes
- Category
- Uptime (30 days)
- 100%
Visit documentation ↗contactlint.com
Online · 1210 msTested Nov 15, 2026 · checked dailyIs it down? Status & uptime
About contactlint.com
Catch mistyped, throwaway and dead email addresses at signup or before your AI agent saves a contact. HTTP API and hosted MCP server. 250 free checks a month, then $9 for 5,000.
- Provider
- contactlint.com
- Website
- contactlint.com ↗
Details from contactlint.com.
Key facts
- 100% uptime (30 days)
- Callable from the browser (CORS)
- HTTPS
Validate emails before they bounce
mailboxlayer checks syntax, MX records and SMTP, and flags disposable addresses, with a free plan to start.
Try mailboxlayer free→Free tier on every API
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mailfloss
Stop spam signups: block disposable and invalid emails and suggest typo fixes. 500 free a month
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Ratings & reviews
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ContactLint API FAQ
Is the ContactLint API free?
Yes. The ContactLint API is listed in the Email category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Does the ContactLint API require an API key?
Yes. The ContactLint API uses apiKey authentication, so you need to register for credentials before making requests.
Can I call the ContactLint API from the browser?
Yes. The ContactLint API supports CORS, so front-end JavaScript can call it directly.
Does the ContactLint API support HTTPS?
Yes. The ContactLint API is served over HTTPS, so it's safe to use in production.
Maintain the ContactLint API? Add a badge
Show that ContactLint is listed on Public APIs. The badge displays its developer rating once it has one.
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