Microsoft Flow: @mention action not working for Teams reply

Hello Julian12 ,

Sorry for a delayed response, were you able to get it working ? I have not tested 'mention channel' with flow but it should be achievable using Graph beta. Hopefully you have already found Denis' blog, if not here is a reference: http://www.expiscornovus.com/2019/05/29/mention-a-channel-with-flow/

To use the logic mentioned in the blog, you will have to setup graph access to the environment first, basically just navigate to graph explorer: https://developer.microsoft.com/en-us/graph/graph-explorer set the mode to beta, play around with adding the right permissions to allow an http POST possible to a teams channel, permissions reference for graph: https://docs.microsoft.com/en-us/graph/permissions-reference

Once you have graph setup properly you should be able to post a message from within graph explorer, use the navigation pane on left to choose "post in channel" the query should look like this: https://graph.microsoft.com/beta/teams/%7Bteam-id%7D/channels/%7Bchannel-id%7D/messages

If you are able to post via graph explorer like this, then you have to just simply use the same query https://graph.microsoft.com/beta/teams/%7Bteam-id%7D/channels/%7Bchannel-id%7D/messages in a http post message as per the blog.

This is still in Beta and i have not tested it, so cant assure that it would work great, but surely it looks possible and this is all we have for now.

Thanks