mailboxlayer
FreemiumLiveLast verified 24 Sept 2026
Validates email syntax, SMTP deliverability, disposable/role addresses and catch-all domains.
Example request
curl -s 'https://apilayer.net/api/check?access_key=$API_KEY&[email protected]'
Free tier, in plain English
Free plan allows 100 validations a month for non-commercial use; paid plans start at $14.99/month for commercial use.
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