Is it possible to forward a Slack message to another channel with n8n?

Questions
1

Hello,

I have a n8n workflow which is triggered when a specific message (event invitations) from a user (that is part of a specific team) is posted in a specific channel. I would like to use n8n to forward the triggering slack message to another channel. Is this possible with n8n?

Thank you for taking the time to help. :slightly_smiling_face:

2

This should be possible by linking the slack message trigger node to a slack “Send a message” node. Give it a try. You could put filtering logic between the trigger and the “send” to detect repeats, etc. too.

3

Please explain how this will forward a message to another channel. I don’t understand your solution.

4

As far as I could tell, there is no apparent Slack API function related to “forwarding” anything, so, I was speculating that the Slack UI must be making a copy of a message/event/etc. and sending it elsewhere using the postMessage API. My suggestion was to do the same in n8n with workflow steps.

If you have a link to a specific “forward” API function in Slack, please post it here and someone can probably help you call it using an HTTP Request node.

Here are a few search starting points if you don’t already have a link/reference for the “forward” API function you are asking about:

5

You are right. The Slack API lacks a message-forwarding-function. The Slack supporter I spoke to said: “This is on there list for possible future implementations.” :rofl:

The solution that is workings for me looks very close to a forwarded slack message. The only difference is that on the solution I use the “forwarded” message starts with a link, while the Slack GUI forward feature starts the post with the message text itself. The rest is identical.

I use chat.getPermalink to retrieve
the permanent link to the message that I want to “forward”. Then I use chat.postMessage to post a message into another channel, that message only contains that permalink. Slack posts it and unrolls the perma link.

Thanks a lot for pointing in the right direction. :+1:

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6

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