# Create a channel, add a member, and post a message: n8n workflow

> Started by an event in a connected app, and works across Mattermost. 4 steps: small enough to read in one sitting and change without fear.

Source: https://millionrounds.com/workflow/create-a-channel-add-a-member-and-post-a-message (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Content](https://millionrounds.com/workflows?category=Content#library)

# Create a channel, add a member, and post a message

Started by an event in a connected app, and works across Mattermost. 4 steps: small enough to read in one sitting and change without fear.

Small

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fcreate-a-channel-add-a-member-and-post-a-message)

**4 steps** Small: readable in one sitting

**0** Branches: places the flow splits

**0** Loops or waits

**1** Service it connects to

## The flow

Starts it 1 Service 3

The steps in the order they run, from what starts it.

- 1 **On clicking 'execute'** Manual trigger *Starts it*
- 2 **Mattermost** Mattermost *Service*
- 3 **Mattermost1** Mattermost *Service*
- 4 **Mattermost2** Mattermost *Service*

## How it's built

- **Starts on:** An event in a connected app
- **Steps:** 4
- **Size:** Small: readable in one sitting
- **Connects to:** Mattermost
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n account, plus your own Mattermost account. You connect your own accounts after importing it; none are included.

What starts it?

It starts on an event in a connected app.

Does it use AI?

No. Every step is fixed logic or a call to a service, so it does the same thing every time.

How long does it take to set up?

Not long. At 4 steps it can be read in one sitting and changed without fear.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

**Before you run it**

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 4 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fcreate-a-channel-add-a-member-and-post-a-message)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[Mattermost](https://millionrounds.com/workflows?service=Mattermost#library)

## Workflows like it

Also content, with the same services where possible, closest in size first.

- [**Start a Whereby video call from Mattermost** 3 steps · Mattermost](https://millionrounds.com/workflow/start-a-whereby-video-call-from-mattermost)
- [**Post a message to a channel on Mattermost** 2 steps · Mattermost](https://millionrounds.com/workflow/post-a-message-to-a-channel-on-mattermost)