emailvalidation.io

Free email checker and validator: verify any email address with syntax, MX record and live mailbox checks, validate lists in bulk or use the API.

Visit emailvalidation.io →Docs Pricing

Email validation and verification API and web service. Checks address syntax (RFC 5321/5322), domain MX records, and mailbox existence via SMTP without sending an email. Also flags disposable, role-based, free-provider and catch-all addresses, suggests typo corrections, and supports bulk CSV verification of up to 100,000 addresses. Offers a REST API with SDKs (JavaScript, Python, PHP, Ruby, Go, C#, R, Rust, Perl), a hosted MCP server, and free tools including MX lookup, SPF/DMARC/DKIM checkers and generators.

Category: Email & messaging
Pricing: freemium
Free tier: yes
API: yes
MCP server: yes
SDK: yes
Open source: no

#email-validation #email-verification #api #bulk-verification #mcp-server #email-tools

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Listed 2026-10-22 · last verified 2026-10-22 · extracted by @cf/zai-org/glm-5.3-flash · confidence 0.95

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API

curl https://toolgrep.com/api/products/emailvalidation-io