Mention everyone in a Teams Channel

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Posted on 26 Feb 2025 07:25:12 by nshaw75

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I want to create a broadcast in Teams when an Item in a SharePoint List is updated. I would like to mention everyone in the channel that I post this in. I originally started to resolve this in Power Apps but couldn't get a solution that worked and I thought maybe using the Post message in chat or channel action.

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ShehanMP 76 on 22 Sep 2025 at 13:42:11

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Mention everyone in a Teams Channel

Can we mention everyone in the group like below?

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Expiscornovus 32,379 Most Valuable Professional on 26 Feb 2025 at 14:45:46

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Mention everyone in a Teams Channel

Here are a couple of actions which you can use to retrieve those values for the variables. You can use a Get Team action to return the Team Id and a List channels (and a Filter Array) to find the correct channel and its id.

In the last variable an expression is used to get the ChannelId value:

first(body('Filter_array'))['id']

Happy to help out 😁

I share more #PowerAutomate and #SharePointOnline content on my Blog, Bluesky profile or Youtube Channel

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nshaw75 423 on 26 Feb 2025 at 12:42:05

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Mention everyone in a Teams Channel

Hi @expicornovus

Many thanks for this. It has given hope, although I am pretty hopeless with these things :D

I am not sure how i would initialize the variables for the team Channel Name. I would (if I were doing this to a sharepoint list) would use a get items action so I could find the information for the variable. I am therefore getting an error which says Invalid Variable

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Expiscornovus 32,379 Most Valuable Professional on 26 Feb 2025 at 11:25:17

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Mention everyone in a Teams Channel

You can mention the channel, you can use the Send an HTTP request action for that.

Below is an example

URI

https://graph.microsoft.com/v1.0/teams/@{variables('TeamId')}/channels/@{variables('ChannelId')}/messages

Body

{ "body": { "content": "This is Flow mention channel test, <at id=\"0\">@{variables('ChannelName')}</at>", "contentType": "html" }, "mentions": [ { "id": 0, "mentionText": "@{variables('ChannelName')}", "mentioned": { "conversation": { "id": "@{variables('ChannelId')}", "displayName": "@{variables('ChannelName')}", "conversationIdentityType": "channel" } } } ] }

Below is the test result

I have also written a blog about this approach back in 2019 (which used different actions, nowadays you can use this Send an HTTP request instead):
https://www.expiscornovus.com/2019/05/29/mention-a-channel-with-flow/

Happy to help out 😁

I share more #PowerAutomate and #SharePointOnline content on my Blog, Bluesky profile or Youtube Channel

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