5 items
Warns you in Gmail when a recipient is outside your trusted domains - even if they are already in your contacts. Gmail warns you about external recipients only when they are not in your contacts. That leaves the most dangerous case uncovered: the outside person you have emailed before, whose name sits right next to a colleague's in auto-complete. This extension checks the To, Cc and Bcc fields as you type and shows a bar at the top of the compose window naming any recipient outside the domains you trust. - Works even when the recipient is already in your contacts - Highlights look-alike domains in red (yourcompanyy.com vs yourcompany.com) - Highlights an outside address sharing a first name with an internal recipient - Checks To, Cc and Bcc, in new messages, replies and forwards - Trust whole domains, or single addresses at an otherwise external domain - An on/off switch, and no setup beyond entering your domain It never blocks sending. There is no pop-up and no confirmation step - the extension only displays a bar, and it does not interact with the Send button at all. Your settings stay in your browser. The extension does not collect, transmit or store the contents of your email.
Aug 20, 2026
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