Gmail warns for suspicious activity
Now, if it looks like something unusual is going on with your account, we'll alert you by posting a warning message saying, "Warning: We believe your account was last accessed fromâ¦" along with the geographic region that we can best associate with the access.Great feature, Indeed! :-D
To determine when to display this message, our automated system matches the relevant IP address, logged per the Gmail privacy policy, to a broad geographical location. While we don't have the capability to determine the specific location from which an account is accessed, a login appearing to come from one country and occurring a few hours after a login from another country may trigger an alert.