In short, Mail Shield creates random, unique and replaceable email aliases (or shields as I’m calling them) which delivers the messages straight to your Gmail inbox. It helps you not giving up of your real email address when applying to online services.

Mail Shield helps to protect your online privacy by creating aliases, or shields, to your Gmail account, that you can use to sign up for services or apps everywhere, delivering all messages to a single inbox. Got a shield exposed? Replace it with another. 🤘