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# Send a Slack Alert

> Post a message to a Slack channel or to a person when something happens in a run.

When a run hits something your team should know about, such as a new high-value
lead or a step that failed, a Slack message is the fastest way to tell them. You
can post to a shared channel or send a direct message to one person.

## Nodes involved

* Use [Channel Message](/platform/workflows/node-reference/communication/channel-message)
  to post to a shared channel the whole team sees.
* Use [Direct Message](/platform/workflows/node-reference/communication/direct-message) to
  message one person privately.

## Before you start

Both steps need a connected Slack account. Connect it in the Marketplace first;
once connected, the step can post on your behalf.

## How to build it

### Pick the destination

Add a Channel Message step and choose the channel, or add a Direct Message step
and choose the person.

### Write the message

Enter the text to send. Point parts of it at earlier steps so the alert
carries real detail, for example the lead's name or the reason a step failed.

## Related

#### [Channel Message](/platform/workflows/node-reference/communication/channel-message)

Post to a shared Slack channel.

#### [Direct Message](/platform/workflows/node-reference/communication/direct-message)

Message one person in Slack.