How to Send Asana Task Notifications to Slack with Power Automate

make.powerautomate.com > My flows > + New flow > Automated cloud flow

Create a new Automated cloud flow

Go to make.powerautomate.com and sign in with your Microsoft account. In the left sidebar, click 'My flows', then click '+ New flow' at the top. Select 'Automated cloud flow' from the dropdown — this is the event-triggered option, not scheduled. Give the flow a name like 'Asana Task Assignment to Slack', then click 'Skip' on the trigger selector screen because you'll search for it manually in the next step.

1. 1Click 'My flows' in the left sidebar
2. 2Click '+ New flow' in the top toolbar
3. 3Select 'Automated cloud flow'
4. 4Name the flow 'Asana Task Assignment to Slack'
5. 5Click 'Skip' on the Choose your flow's trigger dialog

Flow canvas > Choose an operation > Search 'Asana' > When a task is assigned to a user

Add the Asana trigger

Click the empty trigger block on the canvas. The 'Choose an operation' panel opens on the right side. Type 'Asana' in the search bar. Power Automate will show the Asana connector. Click it, then scroll through the trigger list. Select 'When a task is assigned to a user' — this is the primary trigger for this workflow. If you also want priority-change detection, you'll add a separate condition action later.

1. 1Click the empty trigger block on the canvas
2. 2Type 'Asana' in the search bar in the right panel
3. 3Click the Asana connector icon
4. 4Select 'When a task is assigned to a user' from the trigger list

Trigger block > Sign in to Asana > OAuth popup

Connect your Asana account

After selecting the trigger, Power Automate prompts you to sign in to Asana. Click 'Sign in' and a popup opens for OAuth authentication. Log in with the Asana account that has access to the projects you want to monitor. Once authenticated, you'll see the connection listed with a green checkmark and your Asana email address. This connection is saved globally and will appear in 'Connections' in the left sidebar for reuse.

1. 1Click 'Sign in' inside the Asana trigger block
2. 2Complete Asana OAuth login in the popup window
3. 3Grant Power Automate the requested permissions
4. 4Confirm the connection shows your Asana email with a green checkmark

Asana trigger block > Workspace dropdown > Project dropdown

Configure the Asana trigger scope

With the connection established, set the Workspace dropdown to your Asana organization. Then set the Project dropdown to the specific project you want to monitor, or leave it blank to monitor all projects in the workspace. The 'Assignee' field can be left blank — this flow will fire for any assignee and you'll route notifications individually using Slack DMs in a later step. Click the title bar of the trigger to collapse it.

1. 1Open the Workspace dropdown and select your organization
2. 2Open the Project dropdown and choose a specific project, or leave blank for all projects
3. 3Leave the Assignee field empty to capture all assignments
4. 4Collapse the trigger block by clicking its title bar

Flow canvas > + New step > Control > Condition

Add a condition to check priority changes

Click '+ New step' below the trigger. Search for 'Condition' and select the built-in Control action called 'Condition'. This lets you branch logic: one path for new task assignments, another for priority changes. In the left value box, click inside and select 'Priority' from the Asana dynamic content panel that appears. Set the operator to 'is not equal to' and leave the right value blank — this catches tasks where priority has been explicitly set. You'll add Slack actions inside both the Yes and No branches.

1. 1Click '+ New step' below the trigger block
2. 2Search 'Condition' in the operation search bar
3. 3Select 'Condition' under the Control category
4. 4Click inside the left value box and pick 'Priority' from dynamic content
5. 5Set operator to 'is not equal to' and leave right value empty

Condition block > If yes branch > Add an action > Slack > Send a direct message

Connect your Slack account

Inside the 'If yes' branch of the Condition, click 'Add an action'. Search for 'Slack' and select the Slack connector. Choose the action 'Send a direct message'. A 'Sign in to Slack' prompt appears — click it and complete the OAuth flow for your Slack workspace. Make sure you authorize as a user or bot that has permission to send DMs. The connection saves automatically and appears in your Connections list.

1. 1Click 'Add an action' inside the If yes branch
2. 2Search 'Slack' in the operation panel
3. 3Select the Slack connector
4. 4Choose 'Send a direct message'
5. 5Click 'Sign in' and complete OAuth for your Slack workspace

If yes branch > Send a direct message > Username or email + Message Text

Map Asana fields to the priority-change Slack message

In the 'Send a direct message' action inside the If yes branch, fill in the Username or email field with the Asana dynamic content value 'Assignee Email'. In the Message Text field, build a message using dynamic content. Click inside the field, then insert tokens from the dynamic content panel. A clear message looks like: 'Priority update on your task [Task Name]: now marked as [Priority]. Due: [Due Date]. View it here: [Permalink]'. Keep the message under 500 characters for clean Slack display.

1. 1Click inside 'Username or email' and select 'Assignee Email' from dynamic content
2. 2Click inside 'Message Text'
3. 3Type 'Priority update on your task ' then insert the 'Task Name' token
4. 4Type ': now marked as ' then insert the 'Priority' token
5. 5Add Due Date and Permalink tokens at the end of the message

Condition block > If no branch > Add an action > Slack > Send a direct message

Add a Slack action in the 'If no' branch for new assignments

Click 'Add an action' inside the 'If no' branch of the Condition block. Search for Slack and add another 'Send a direct message' action — Power Automate will reuse your existing Slack connection automatically. This message fires when a task is assigned but has no priority set yet. Map Assignee Email to the recipient field. Write a message like: 'You've been assigned a new task: [Task Name]. Project: [Project Name]. Due: [Due Date]. Open in Asana: [Permalink]'.

1. 1Click 'Add an action' inside the If no branch
2. 2Search 'Slack' and select 'Send a direct message'
3. 3Confirm the existing Slack connection is selected automatically
4. 4Map 'Assignee Email' to the Username or email field
5. 5Build the assignment message with Task Name, Project Name, Due Date, and Permalink tokens

Flow toolbar > Save > Test > Manually > Test

Test the flow with a live Asana task

Click 'Save' in the top toolbar, then click 'Test' in the upper right corner. Select 'Manually' and then 'Test'. Go to Asana in another tab and assign an existing task to a team member (or yourself for testing). Return to Power Automate — within 3 minutes the flow run should appear in the test panel. Click the run to expand it and inspect each step's input/output. Confirm the Slack DM was delivered by checking the recipient's Slack DMs.

1. 1Click 'Save' in the top toolbar
2. 2Click 'Test' in the upper right
3. 3Select 'Manually' then click 'Test'
4. 4Assign a task in Asana to trigger the poll
5. 5Return to Power Automate and wait up to 3 minutes for the run to appear

My flows > [Flow name] > Run history

Turn the flow on and monitor run history

After a successful test, click the back arrow to return to the flow detail page. The flow status shows as 'On' automatically after saving. To verify it's active, check that the toggle next to the flow name in 'My flows' shows blue/On. For the first 24 hours, check 'Run history' on the flow detail page to confirm runs are completing without errors. Each run log shows the trigger payload from Asana and the Slack response.

1. 1Click the back arrow from the canvas to the flow detail page
2. 2Confirm the flow status toggle shows 'On'
3. 3Click 'Run history' tab on the flow detail page
4. 4Review the first 3-5 completed runs to confirm green status on all steps

Paste this expression into a 'Compose' action placed between the Asana trigger and the Condition block. It reformats the raw Asana due_date string (YYYY-MM-DD) into a readable format (e.g. 'Feb 15, 2024') and handles null due dates gracefully. Reference the Compose output using the token 'Outputs' in your Slack message text instead of the raw Due Date token.

// Add a Compose action after the Asana trigger
// Name it: Format Due Date
// Paste this into the Inputs field of the Compose action:

// Add a Compose action after the Asana trigger
// Name it: Format Due Date
// Paste this into the Inputs field of the Compose action:

if(
  empty(triggerBody()?['due_on']),
  'No due date set',
  formatDateTime(
    triggerBody()?['due_on'],
    'MMM dd, yyyy'
  )
)

// Then in your Slack message text, reference it as:
// Due: @{outputs('Format_Due_Date')}
// instead of the raw dynamic content Due Date token
// This prevents '2024-02-15' appearing in Slack messages
// and avoids errors when due_on is null