SendShield: External Email Confirmation

Warns before sending Gmail messages to recipients outside approved domains.

Prevent accidental data leaks with a simple confirmation step before sending emails outside your organization. External Email Confirmation is a lightweight Chrome extension that integrates seamlessly with Gmail. It automatically detects when you’re about to send an email to recipients outside your company domain and displays a clear, customizable confirmation popup before the message is sent. Key Features ⚠️ External Domain Warning – Instantly alerts users when they attempt to send emails to recipients outside of approved domains. 🏢 Configurable Trusted Domains – Add partner or vendor domains to a safe list to avoid unnecessary prompts. ✍️ Optional Reason Prompt – Require users to enter a justification before confirming external sends. 🔒 Privacy-Friendly – Runs entirely in the browser with no data collected, transmitted, or stored externally. 🧩 Admin Control – Easily deploy organization-wide via Google Workspace Admin and manage default domain settings. Use Case Ideal for law firms, finance teams, healthcare organizations, MSPs, and any business that handles sensitive information — helping prevent accidental data exposure before it happens.