reacherhq / check-if-email-exists

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

KatrielMoses / MailAccess

Free email OSINT tool, 5000+ platforms, identity clustering, breach detection. No API keys required. pip install mailaccess

philnash / email-verification-api

A library to verify email tokens from the Email Verification API

FGRibreau / mailchecker

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

truemail-rb / truemail

🚀 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.

WICG / email-verification

verified autofill

Limitinfinitude / zcode-pool

ZCode account pool desktop app: mailbox library, batch Z.ai signup + email verification via Microsoft Graph, multi-account switching. Tauri 2 (Windows/macOS/Linux).