At some point I disabled website link previews from YouTube in our Slack team. But this was a huge mistake, we need them back. How do I re-enable link previews for a specific website that was disabled, or for all websites?

I have already disabled / re-enabled all preview types under Preferences > Messages & Media, but YouTube is still disabled.

  • This question has the opposite problem, but it looks like the answer may provide a clue for you.
    – ale
    Aug 15, 2016 at 19:22

2 Answers 2


Visit https://[TEAM].slack.com/admin/attachments as an admin or owner of the team. Then simply click the X on all the website link previews you want to automatically "unfurl" again.

Slack Blacklisted Attachments


There is no way to do this right now. I don't think Slack has built this feature.

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