Celeb Glow
news | March 08, 2026

Is someone who is @mentioned in a direct message conversation they are not in still notified?

My Slack application (version 3.2.0 from the App Store) is running on my MacBook (running High Sierra 10.13.5).

I send direct messages to Persons A and B (I have invited both of them to the same direct message thread). In the message thread, I mention Person C by using @person_C. Is person C notified by the mention and will the message thread then be visible to person C?

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1 Answer

I've just tested this. Private messages are only visible to the people in the private conversation - if someone is @mentioned and they are not in the conversation, they will not see the message and will not be able to view other messages in the conversation.

That direct messages using @mention do not send notifications is also stated at the bottom of Slack's "Mention a member" documentation:

Tip: Using an @mention in a direct message with any member will not trigger a notification.

Additionally, since you cannot share messages from private conversations, the only way to share a message with someone outside of the conversation is to copy-paste it into a separate message to them.

So no, person C would not see the chat message with the @mention or any of the other messages in the conversation.

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