Official SDKs & APIs
Everything you need to integrate professional email verification into your application stack. Use these official libraries to verify email addresses programmatically from your own code — real-time, one at a time, or in bulk — with the same validation pipeline that powers the EmailVerify.io email verifier and API.
Official Library
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Ru
Ruby SDK
Go
Go SDK
PH
PHP SDK
No
Node.js SDK
C#
C# / .NET SDK
Py
Python SDK
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Frequently Asked Questions
What programming languages are supported?
We offer official SDKs for Python, Node.js, PHP, Go, Ruby, and .NET (C#).
Do I need an API key to use these SDKs?
Yes, you need a valid API key from your EmailVerify.io dashboard to authenticate requests.
Are these SDKs free to use?
All our official SDKs are open-source and free to use. You only pay for the API credits used for validation.
Can I integrate these into my existing application?
Absolutely. Our SDKs are designed to be easily integrated into any modern application stack with minimal setup.
How do I verify an email address using code?
Install the SDK for your language (Python, Node.js, PHP, Ruby, Go, or C#), authenticate with your EmailVerify.io API key, then call the verify method with the address you want to check — for example Emailverify.validate(email: 'jane@example.com') in Ruby. The response returns a status (valid, invalid, catch-all, role-based, disposable, or unknown) in under a second. If you're not ready to write code yet, our guide on how to verify an email address without sending one walks through five methods, including the no-code browser verifier.
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