How to Send Wrike Milestone Alerts to Slack with Power Automate

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

Open Power Automate and create a new Automated cloud flow

Go to make.powerautomate.com and sign in with your Microsoft 365 account. In the left sidebar, click 'My flows', then click '+ New flow' at the top left. From the dropdown, select 'Automated cloud flow'. Give the flow a name like 'Wrike Milestone → Slack Celebration'. You will be prompted to choose a trigger — search for 'Wrike' in the trigger search box.

1. 1Click 'My flows' in the left sidebar
2. 2Click '+ New flow' in the top-left corner
3. 3Select 'Automated cloud flow' from the dropdown
4. 4Type a name: 'Wrike Milestone → Slack Celebration'
5. 5In the trigger search box, type 'Wrike' and press Enter

Flow canvas > Trigger picker > Wrike > When a task is completed

Set the Wrike trigger to 'When a task is completed'

From the Wrike trigger options, select 'When a task is completed'. This trigger polls the Wrike API on a schedule (default every 3 minutes) and fires when any task status changes to completed. You will be prompted to sign in to Wrike — click 'Sign in' and authorize Power Automate with your Wrike credentials in the popup.

1. 1Click 'When a task is completed' from the Wrike trigger list
2. 2Click 'Sign in' in the connection dialog
3. 3Authorize Power Automate in the Wrike OAuth popup that opens
4. 4Confirm the connection shows your Wrike account name

Flow canvas > Wrike trigger card > Folder ID field

Configure folder or project scope in the trigger

Inside the trigger card, look for the 'Folder ID' field. Set this to the specific Wrike folder or project that contains your milestones. You can find the Folder ID in Wrike by opening the project, clicking the three-dot menu, and selecting 'Copy link' — the ID is the alphanumeric string after '/folders/' in the URL. Scoping the trigger to one folder dramatically reduces noise and unnecessary API calls.

1. 1Open the Wrike trigger card by clicking on it
2. 2Click the 'Folder ID' input field
3. 3Paste the Folder ID from your Wrike project URL
4. 4Leave 'Status' blank — you will filter by task type next, not status

Flow canvas > + New step > Control > Condition

Add a Condition action to filter milestone tasks only

Click '+ New step' below the trigger. Search for 'Condition' and select the built-in Condition control action. This is where you filter so only milestone-type tasks proceed. In Wrike, milestone tasks have a specific task type field value. In the left side of the condition, click 'Choose a value', select 'Dynamic content', and pick 'Task Type' from the Wrike trigger output. Set the operator to 'is equal to' and type 'Milestone' on the right.

1. 1Click '+ New step'
2. 2Search for 'Condition' and select 'Control - Condition'
3. 3Click 'Choose a value' on the left side of the condition row
4. 4Select 'Dynamic content' then pick 'Task Type' from the Wrike outputs
5. 5Set operator to 'is equal to' and type 'Milestone' on the right

Flow canvas > Condition > If yes branch > Add an action > Wrike > Get task

Add a 'Get task' action to retrieve full milestone details

Inside the 'If yes' branch of the Condition, click 'Add an action'. Search for 'Wrike' and select 'Get task'. This action fetches the complete task record so you have access to fields like description, assignees, and custom fields that the trigger output alone does not include. In the 'Task ID' field, use the dynamic content picker to select 'Task ID' from the trigger output.

1. 1Click 'Add an action' inside the 'If yes' branch
2. 2Search 'Wrike' and select 'Get task'
3. 3Click the 'Task ID' field and select 'Task ID' from dynamic content
4. 4Leave all other fields at default

Flow canvas > If yes branch > Add an action > Wrike > Get user

Add a 'Get user' action to resolve the assignee name

Still inside the 'If yes' branch, click 'Add an action' and search for 'Wrike'. Select 'Get user'. In the 'User ID' field, use dynamic content to pick 'Responsible IDs' from the 'Get task' output. This resolves the user ID to a readable name so your Slack message says 'Completed by Sarah Chen' instead of displaying a raw ID string like 'KUABC123'. If a milestone has multiple assignees, this step returns the first in the array.

1. 1Click 'Add an action' below 'Get task'
2. 2Search 'Wrike' and select 'Get user'
3. 3Click 'User ID' and pick 'Responsible IDs Item' from the 'Get task' dynamic content
4. 4Save the action

Paste this expression into a 'Compose' action placed between 'Get task' and the Slack 'Post message' action. It formats the completed date from ISO 8601 into a readable string and builds a fallback name when no assignee is present. Reference the Compose output as 'Outputs('Format_Milestone_Message')' in the Slack message body.

// Power Automate Expression — paste into a Compose action input
// Builds the full Slack message string with safe fallbacks
concat(

// Power Automate Expression — paste into a Compose action input
// Builds the full Slack message string with safe fallbacks

concat(
  '🏁 Milestone complete: ',
  triggerOutputs()?['body/title'],
  ' — finished by ',
  if(
    empty(outputs('Get_user')?['body/firstName']),
    'Unassigned',
    concat(
      outputs('Get_user')?['body/firstName'],
      ' ',
      outputs('Get_user')?['body/lastName']
    )
  ),
  ' on ',
  formatDateTime(outputs('Get_task')?['body/completedDate'], 'MMMM d, yyyy'),
  '. View it here: ',
  outputs('Get_task')?['body/permalink']
)

Flow canvas > If yes branch > Add an action > Slack > Post message

Connect your Slack account

Click 'Add an action' below 'Get user'. Search for 'Slack' and select 'Post message'. If you have not connected Slack before, Power Automate will prompt you to sign in. Click 'Sign in' and authorize the Slack app in the OAuth popup — make sure you are authorizing with a Slack account that has permission to post in the target channel. The Slack connection is stored under 'Connections' in the left sidebar for reuse.

1. 1Click 'Add an action' below 'Get user'
2. 2Search 'Slack' and select 'Post message (V2)' — prefer V2 over the legacy version
3. 3Click 'Sign in' when prompted
4. 4Authorize Power Automate in the Slack OAuth popup
5. 5Confirm your Slack workspace name appears in the connection dropdown

Flow canvas > Slack Post message card > Channel Name + Message Text fields

Configure the Slack message with milestone details

In the 'Post message' action, set the 'Channel Name' to your celebrations channel (e.g. #team-wins). In the 'Message Text' field, build the message using dynamic content tokens: Task Title, project/folder name, and the user's first and last name from the 'Get user' step. Write something direct — avoid emoji overload. You can also add a 'Link' field pointing to the Wrike task URL so the team can open the milestone in one click.

1. 1Type or select your Slack channel in the 'Channel Name' field (e.g. #team-wins)
2. 2Click the 'Message Text' field
3. 3Type your message and insert dynamic tokens: 'Milestone complete: [Task Title] — finished by [First Name] [Last Name]. View it here: [Task Permalink]'
4. 4Optionally add a celebratory emoji prefix to the message text directly, e.g. '🏁'

Flow canvas > If yes branch > Add an action > SharePoint > Get items

Add a deduplication check using a SharePoint or Dataverse variable

Because this flow uses polling, there is a real risk of the same milestone triggering multiple Slack messages if the completion event appears in multiple poll cycles. The cleanest fix in Power Automate is to log completed Task IDs to a SharePoint list row after each successful post. At the start of the 'If yes' branch, add a 'Get items' action from SharePoint filtered by Task ID. Add another Condition: if the item already exists, skip posting. If it does not exist, proceed and then add a 'Create item' action to log the Task ID after the Slack post.

1. 1Click 'Add an action' at the top of the 'If yes' branch, before the Slack step
2. 2Search 'SharePoint' and select 'Get items'
3. 3Set 'Site Address' and 'List Name' to a SharePoint list you create for this purpose (columns: TaskID as text, CompletedAt as date)
4. 4Set 'Filter Query' to: TaskID eq '[Task ID dynamic token]'
5. 5Add a Condition below: if 'value' array length is greater than 0, set the 'If yes' to 'Terminate' (skip), and move Slack post to the 'If no' branch
6. 6After the Slack post, add 'Create item' in SharePoint to log the Task ID

Flow canvas > Save > Test > Manually > Run flow

Test the flow with a real Wrike milestone

Click 'Save' in the top toolbar, then click 'Test' in the top right corner. Select 'Manually' and then 'Run flow'. In Wrike, mark a milestone task as complete in the folder you configured. Wait up to 3 minutes for the polling trigger to fire. Return to Power Automate and click 'Refresh' on the flow run history to see if the run succeeded. Open your Slack channel to confirm the message arrived.

1. 1Click 'Save' in the toolbar
2. 2Click 'Test' in the top right
3. 3Select 'Manually' and click 'Run flow'
4. 4Switch to Wrike and mark a test milestone task as complete
5. 5Return to Power Automate and watch the run history — refresh after 3 minutes

My flows > [flow name] > Three-dot menu > Edit > Flow settings

Turn on the flow and set error notifications

Once the test passes, click 'Turn on' if the flow is not already active. Go to 'My flows', find your flow, click the three-dot menu, and select 'Edit'. Scroll to the top-level flow settings and enable 'Send me an email notification when this flow fails'. This ensures you hear about broken runs rather than silently missing milestone celebrations. Set the poll frequency under the trigger settings — the default is 3 minutes, which is fine for this use case.

1. 1Go to 'My flows' and find 'Wrike Milestone → Slack Celebration'
2. 2Click the three-dot menu and select 'Edit'
3. 3Click the gear icon or 'Flow settings' if available
4. 4Toggle on 'Send me an email when this flow fails'
5. 5Click 'Save'