

There’s two prongs to this
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Caching is an optimization strategy used by legitimate software engineers. AI dorks are anything but.
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Crippling information sources outside of service means information is more easily “found” inside the service.
So if it was ever a bug, it’s now a feature.
Presumably you would switch or cancel accounts/subscriptions as the emails get forwarded.
This would be for a mop up of old subscriptions you forgot about.