The new function will allow both to undo mentions of other users that have already been made and to restrict entire accounts so that they can never mention us again. In addition, Twitter will also notify us if a user who does not follow us tags us.
Without a certain date of application, the Unmention function will be an extension of another launched last year and that allows you to limit the people who reply to our tweets. Both tools are a great way to avoid harassment and aggressive responses, especially in tweets that go viral and reach many people.
Source: Digital Trends
https://twitter.com/_dcrc_/status/1404578211309056006
