How to post a slack message to private channel

[wiredupjax]

Dear Community,

I can post to public channels but cannot post to a private channel. Any ideas how?

Thanks, Jason

[ChristianAbata · Accepted solution]

hi @wiredupjax  actually send message to private channels far as I know is not possible my friend sorry.

[chico]

This is not the real solution!

Posting to Private Channels is nothing new, we have been doing it for years.

Why the rush to mark this as "solved" in less than 3 hours?

I'm starting to notice a ton of questions in here, tagged as "solved" when they def are not and its not helping anyone.

Posting to a Private channel is as simple as;

1. knowing the exact name of the channel
2. your user account tied to the flow needs to also be a member of that private channel
3. adding an underscore at the beginning of the name and enter it as a custom value
   _mychannel

Done.

Lets please get away from this desire to have cool badges and fancy titles by improper resolutions here.

It is of no benefit to new users looking for info!

[jeanine2022]

Hi there, I know this thread is old but hoping to tag off of your great response above. I am attempting to do exactly what you described. I believe I have met all of the requirements but am still getting an error that the channel can't be found. Can you help?

[chico]

@jeanine2022  things seem to constantly change/update so that fact about using underscores has not been a need recently.
I still post slack messages to private channels, daily.
now days when setting up a flow, we simply enter the name of the channel, alone.
keep in mind that your account or the account on the connector, still needs to be a member of that private slack channel.

so in your case its just "netsuite_admins"

[jeanine2022]

Thank you, Chico. I've tried every iteration of the name I can think of including netsuite_admins. I am connected to both Slack and PowerAutomate through Office365 SSO. I'll continue researching. So close....!

[daniuosagi]

Hey I encountered this issue today and did some research and found that the "Channel not found" issue occured because the bot posting the message is not invited in the private channel (since Power Automate connetor defaulted to use the bot to post the message).

To resolve that, it's actually pretty simple, although it took me quite a few hours to find the solution: 

- Select the "Post As User" as "Yes".  

After I did that it succeeded!  Please keep me posted if it worked on your end as well 🙂

[pmcgurn01]

For anyone hitting this issue and not wanting to post "as user", the solution is pretty easy.

In the private channel in Slack, add the "Microsoft Power Platform Connectors" Integration to the channel.  You should've been prompted to install this when connecting Power Automate to Slack the first time, if it wasn't already installed.  Once you do this, you should be able to have Power Automate post into any private channel you're a member of without issue.  I haven't tested this with channels I'm not a member of, to see if it works for those, too, but I doubt it since the initial authentication was from my own account.

[jeanine2022]

I stumbled on the user setting a few days after posting my last reply. I wish I would have come back here and posted, it would have saved you some time!