# EmailGuard

Email validation API for signup and lead intake—syntax, disposable, role, relay, and public-domain signals in one request.

## Public pages
- [Home](/)
- [Free Tools](/tools)
- [Contact](/contact)
- [Pricing](/pricing)
- [Features](/features)
- [Blog](/blog)
- [How to Block Disposable Emails at Signup (Server-Side)](/blog/block-disposable-email-signup)
- [How to Cache Email Validation API Results](/blog/cache-email-validation-api)
- [Disposable Email Blocklist vs Validation API](/blog/disposable-email-blocklist-vs-api)
- [Email Validation API: What to Check Before You Store an Address](/blog/email-validation-api)
- [Email Validation vs Verification](/blog/email-validation-vs-verification)
- [EmailGuard SDK Guide: TypeScript, Go, Python, PHP, and Ruby](/blog/emailguard-sdk-guide)
- [Fail Open vs Fail Closed Email Validation at Signup](/blog/fail-open-email-validation)
- [How to Normalize Plus-Addressed Emails at Signup](/blog/normalize-plus-addressed-email-signup)
- [Privacy Relay vs Disposable Email: Apple Hide My Email and Signup Policy](/blog/privacy-relay-vs-disposable-email)
- [How to Require a Work Email at Signup](/blog/require-work-email-signup)
- [How to Set a Role-Based Email Signup Policy](/blog/role-based-email-signup-policy)
- [What Is a Role-Based Email Address?](/blog/what-is-role-based-email-address)
- [Changelog](/changelog)
- [Changelog Archive](/changelog/archive)
- [Changelog 1.0.0](/changelog/1.0.0)
- [Documentation](/docs)
- [Billing plans and subscription](/docs/billing-plans-and-subscription)
- [Billing usage](/docs/billing-usage)
- [Creating API keys](/docs/creating-api-keys)
- [Your first email detection check](/docs/first-email-detection-check)
- [Integrating from the dashboard](/docs/integrating-from-the-dashboard)
- [Introduction](/docs/introduction)
- [Knowledge Base](/docs/knowledge-base)
- [API key scopes](/docs/knowledge-base/api-key-scopes)
- [API rate limiting](/docs/knowledge-base/api-rate-limiting)
- [Disposable email detection](/docs/knowledge-base/disposable-email-detection)
- [Email detection signals overview](/docs/knowledge-base/email-detection-overview)
- [Email normalization](/docs/knowledge-base/email-normalization)
- [Email valid syntax](/docs/knowledge-base/email-valid-syntax)
- [Privacy relay detection](/docs/knowledge-base/privacy-relay-detection)
- [Public email domains](/docs/knowledge-base/public-email-domains)
- [Role-based email addresses](/docs/knowledge-base/role-based-email-addresses)
- [Subaddressing detection](/docs/knowledge-base/subaddressing)
- [guides/getting-started](/docs/api-reference/guides/getting-started)
- [guides/sdk-typescript](/docs/api-reference/guides/sdk-typescript)
- [guides/sdk-go](/docs/api-reference/guides/sdk-go)
- [guides/sdk-python](/docs/api-reference/guides/sdk-python)
- [guides/sdk-php](/docs/api-reference/guides/sdk-php)
- [guides/sdk-ruby](/docs/api-reference/guides/sdk-ruby)
- [guides/mcp-integration](/docs/api-reference/guides/mcp-integration)
- [email/detect-email-characteristics-get](/docs/api-reference/email/detect-email-characteristics-get)
- [Legal](/legal)
- [Terms of Service](/legal/terms-of-service)
- [Privacy Policy](/legal/privacy-policy)
- [Acceptable Use Policy](/legal/acceptable-use-policy)
- [Cookie Policy](/legal/cookie-policy)
- [Security](/legal/security)
- [Subprocessors](/legal/subprocessors)
- [Data Processing Addendum](/legal/data-processing-addendum)
- [Service Level Agreement](/legal/service-level-agreement)
- [Data Correction](/data-correction)
- [API Alternatives](/alternatives)
- [Kickbox Alternative](/alternatives/kickbox)
- [ZeroBounce Alternative](/alternatives/zerobounce)
- [Mailgun Validate Alternative](/alternatives/mailgun-validate)
- [NeverBounce Alternative](/alternatives/neverbounce)
- [Free Email Syntax Checker](/tools/email-syntax-checker)
- [Free Disposable Email Checker](/tools/disposable-email-checker)
- [Free Role Address Detector](/tools/role-address-detector)
- [Free Email Normalizer](/tools/email-normalizer)
- [Free Relay Domain Lookup](/tools/relay-domain-lookup)
- [Free Public Domain Checker](/tools/public-domain-checker)
- [Free Email Validator](/tools/email-validator)