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API Terms/Communication/MailboxValidator Free Email Checker

MailboxValidator Free Email Checker

mailboxvalidator.com

Checks whether a single email address is from a free email provider and returns the result in JSON or XML format.

The MailboxValidator Free Email Checker API has freemium pricing; offers a free tier (Free bulk trial plan with 100 credits; free API sign up available). Verified 2026-07-12 with per-field source links.

Communication Verified 2026-07-12 low confidence
Base URL
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no source
Auth
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Free tier
Free bulk trial plan with 100 credits; free API sign up available
mailboxvalidator.com ↗
Pricing model
freemium
mailboxvalidator.com ↗
Pricing
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no source
Rate limits
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OpenAPI spec
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MCP server
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