Email Validation GitHub Repositories (2026) · Open Source Tools

Check if an email address exists without sending any email, written in Rust. Comes with a ⚙️ HTTP backend.

:mailbox: Cross-language temporary (disposable/throwaway) email detection library. Covers 55 734+ fake email providers.

Ruby gem to check whether an email address or domain belongs to a government (.gov, .mil, and worldwide gov domains)

🚀 Configurable framework agnostic plain Ruby 📨 email validator/verifier. Verify email via Regex, DNS, SMTP and even more. Be sure that email address valid and exists.

A PHP library for performing email addresses validation via SMTP

Provides email verification on the go.