If you don’t see the new settings they may not yet be available for your account. Try updating your mobile apps or logging in to the website. If that doesn’t work sit tight; the new features should show up for you in the coming days.
If you apply the filter to only allow mentions from people you follow it’s also advisable to make sure your account restricts who can send you direct messages. You can double check this setting on Twitter.com by going to Settings > Security and privacy.
Now let the haters keep on hatin’, because you’ll never know one way or the other.
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