Your first check

1. Open Gmail and open any email.
2. Click the Unmask icon in the toolbar. A side panel opens on the right.
3. Unmask reads the email and shows its report within a second or two.

When you open a different email, the panel follows automatically. In a conversation with several messages, a menu at the top lets you pick which message to inspect.

You don't have to open the panel to be protected: risky emails also get a warning banner inside Gmail (see Warnings inside your inbox).

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