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by Fnoord 2437 days ago
> my point is even chronological order can be exploited

The question is, how easy can it be?

The straw man, is indeed, that you can filter such, client- or server-side. If you see the same shit the whole time, you ignore it all. Easy; even IRC clients with scripting had such features in the 90s. Here is a list of techniques used in e-mail filtering [1]

[1] https://en.wikipedia.org/wiki/Email_filtering#See_also