In Gmail, at the bottom of the page it says Last account activity. Is there a way to clear the history? When I click on “details” it shows the history and I'd like to delete it.
The point of this feature is to detect intrusion into your account; if an intruder was able to disable the feature that would largely defeat its purpose. Given this, and no evidence to the contrary, I conclude this activity report can't be disabled.
It's not possible to clear the history in Gmail Last account activity as this is a feature to help the account owner to learn few details of the last access to his account.
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