How To Article

Slack Notification: Creating a Slack Incoming Webhook [July 2023]

Román Filgueira
February 23, 2022
Check out our video to know more about the HTTP Request Step

Slack is a popular workplace communication platform for companies. On top of the usual messaging function, businesses have access to advanced features like the Workflow Builder to create webhooks. In this blog post, we’ll show you how to create an incoming webhook to send a Slack notification from using HTTP Request.

How to send a Slack notification

Team members want to receive immediate notifications when important events occur on other platforms. But these notifications don’t come very often. Therefore, having them on a platform that is used on daily basis like Slack is much more convenient.

Receiving notifications on Slack channels helps teams be on the same page. They will have access to the same information and can better collaborate, coordinate and delegate tasks accordingly.

Why use Slack notification
Two reasons why companies use Slack for notifications

These are some of the benefits of using automatic Slack notifications. Want to set up your own? Let’s go through all the steps needed to send an HTTP Request from to Slack.

Sending a Slack Notification via Workflow

This process involves using both and Slack workflows, so businesses will need an account on both platforms. In, the HTTP Request Step is available for Business plan and above.

To use Slack workflows, businesses must also sign up for a Slack paid plan. Once ready, the next step is to generate a Slack request URL to be used in a HTTP Request Workflow.

1. Create a Slack workflow

Let’s start by creating a new Slack workflow. First, you must choose a trigger, which is the workflow’s starting point. To exchange information between and Slack, select the Slack Incoming Webhook trigger.

How to get webhook URL for Slack channel
How to create the Slack incoming webhook

2. Write the Slack notification

We now have a trigger, which initiates the workflow when activated. Since we want to send a notification, choose the Send a Message Step. Click on Publish in the top right to generate an URL. Later, you’ll send an HTTP Post request to this URL from

How to get Slack webhook URL
How to write the Slack notification

3. Set up a Workflow

To send a notification to Slack from, we first need to set up a Workflow. Start by choosing Contact Tag Updated as a trigger. This will allow you to test the Slack notification by simply adding your Tag of choice to a Contact.

Create worklow trigger
How to create the Workflow trigger

4. Create the connection with your Slack workflow

Since we want to post data from to Slack, choose Method: POST from the drop-down list. Copy and paste the Slack URL from step 2 here. Now your HTTP request is ready to send data to Slack. Let’s publish it and test the result. HTTP request step
How to add an HTTP Request step to the Workflow

5. Test the notification

To test the Slack notification, you need to activate the trigger. Add your tag to a Contact. Then, open your chosen Slack channel. If the Slack incoming webhook is set correctly, you will receive a new notification.

Slack incoming webhook
How to test the Slack incoming webhook

In some scenarios, sending a simple message like this is all you’ll need. But what happens if, for example, a User wants to send a Slack notification that includes Contact details?

Adding Contact Details to a Slack Notification

Dynamic variables are key elements in Workflows, since they allow Users to operate with personalized Contact data. Let’s see how to add dynamic variables to the Slack message body to pass Contact information from to Slack.

1. Add Slack variables to the message body

To send Contact data in a notification, we need to create the variables on Slack first, followed by Once done, you'll need to use the HTTP body with Slack variables generated in the Workflow.

Adding Slack variables
How to create and name the Slack variables

2. Add dynamic variables to the Workflow

To customize your Slack notification with the Contact name, copy and paste the HTTP body from Slack to Then choose the $ dynamic variable from the drop-down.

Adding dynamic variables
How to add dynamic variables to the Workflow

3. Test the notification

To test the notification, go to the Messages Module. Select a Contact, and assign him/her the tag. Then, open your chosen Slack channel. If everything is set correctly, you will receive a notification with the Contact name.

Slack notification webhook
How to test the Slack incoming webhook with dynamic variables

Sometimes, using dynamic variables is not enough. Users will still need additional context like Contact details or Conversation history when going through their Slack notifications. The easiest way is to add a link to in the Slack notification.

Making the Conversation Available via Slack

By adding a hyperlink to the Slack notification, Users can check the Contact’s complete data and Conversation history on to get a better understanding of their case with just a click.

1. Add a link to the Slack notification

To add a direct link to the Conversation, return to Slack and edit the Send a Message step. Then, add this URL:{contactID}. Once published, this will be your link to the Conversation.

Adding link to Slack incoming webhook
How to add a conversation link to the Workflow

2. Test the notification

To test the notification, select a Contact, and assign him/her the tag. Open your chosen Slack channel. If everything is set correctly, you will find a new message with a hyperlink to Click it to make sure it works.

Slack send notification
How to test the Slack incoming webhook with a conversation link

In conclusion, using dynamic variables and hyperlinks to takes Slack notifications to the next level, allowing Users to get better insight into each Contact. Hence, they can deal with inbound conversations more effectively, which leads to a better customer experience.

This is a simple way of using the HTTP Request Step to make a Slack incoming webhook. But there are other practical ways too in which these can be implemented. We will soon update this article with more useful applications to serve different use cases.

Further Reading

And that’s everything you need to know about Slack notifications with If you would like to learn about other interesting topics, check out these articles:

Román Filgueira
Content Writer
Román Filgueira, a University of Vigo graduate holding a Bachelor's in Foreign Languages, joined the team as a Content Writer in 2021. Román offers expert insights on best practices for using messaging apps to drive business growth.
Copied to Clipboard!