Email Verification 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.

🚀 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.

Simple, stylish Email Verification for Symfony

Provides email verification on the go.

Local-first mail development environment. Point your app at localhost and inspect every message, protocol trace and delivery outcome. SMTP, IMAP, POP3 and a REST API in one self-contained binary.