Mark Done and mute future replies to an item.  [M] or [⌘M]

• It will remain marked done for all future updates — unless you are @mentioned.
• New replies to muted threads will not “open” an item back up.

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🔕 Use this to “unfollow” noisy threads that you no longer need to see.

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Mark the item done, and prevent future replies from reopening it. By default, @mentions will override this and open it back up.