Task Completion Alert: Slack Notification for Box Tasks

Task completions get buried in Box. Share wins instantly in Slack to celebrate progress and keep momentum visible.

Trigger

Task Assignment State Changed

Triggers when a task assignment's state changes. This trigger monitors task assignments for a specific task and detects when the resolution_state changes (e.g., from incomplete to completed, or from completed to approved/rejected).

Slack logo

Action

Post message to channel

Deprecated: posts a message to a slack channel, direct message, or private channel. use `send message` instead.

Why this helps

You complete Box tasks, but your team doesn't know about it. Task progress is invisible, making it hard to coordinate next steps.

  • Team visibility into task progress and completions
  • Celebrate wins and milestones publicly
  • Keeps project status current in Slack
  • Reduces need for status update meetings

Setup

Build it in a few focused steps.

  • 1Connect Box and Slack to Notis.
  • 2Create an automation: 'Post to Slack whenever a task assignment is completed on this Box file.'
  • 3Specify the Box file or task to monitor.
  • 4Choose the Slack channel for completion announcements.
  • 5Test by marking a task as complete and confirming the Slack post appears.

Questions about this workflow

Does this only trigger when marked as complete?

Yes. Only state changes to 'completed' or similar final statuses trigger the notification.

Can I include task details in the message?

Yes. Ask Notis to include the task title, assignee, due date, and any relevant notes in the Slack message.

Will this clutter my Slack channel?

Use a dedicated channel for task updates, or set Slack reminder notifications if you prefer direct messages instead.

When this happens · Trigger

Do this · Action

Supported Triggers and Actions

Notis builds workflows that link Box to Slack. A trigger fires from one place; an action lands in another.

Box logo

Box triggers

Slack logo

Slack actions

Collaboration Details Changed

Triggers when a collaboration's details change (e.g., role, status, expiration). This trigger monitors a specific collaboration and detects when any meaningful field changes, such as role, status, expiration date, access type, or acknowledgment status.

TriggerPolling

Set snooze duration

Deprecated: turns on do not disturb mode for the current user, or changes its duration. use `set dnd duration` instead.

ActionInstant

Comment Changed

Triggers when a comment's content or details change in Box. This trigger monitors a specific Box comment and detects when any meaningful field changes, such as message text edits, tagged message changes, or modification timestamp updates.

TriggerPolling

Add a custom emoji to a Slack team

Deprecated: adds a custom emoji to a slack workspace given a unique name and an image url. use `add emoji` instead.

ActionInstant

New File Comment Added

Triggers when a new comment is added to a file in Box. This trigger monitors a specific Box file and fires when new comments are detected.

TriggerPolling

Add an emoji alias

Adds an alias for an existing custom emoji in a slack enterprise grid organization.

ActionInstant

File Metadata Changed

Triggers when a file's metadata or properties change in Box. This trigger monitors a specific Box file and fires when changes are detected in key fields like name, description, size, modification time, parent folder, or status.

TriggerPolling

Add a remote file

Adds a reference to an external file (e.g., google drive, dropbox) to slack for discovery and sharing, requiring a unique `external id` and an `external url` accessible by slack.

ActionInstant

File Shared Link Changed

Triggers when a file's shared link settings change in Box. This trigger monitors a specific Box file's shared link and fires when changes are detected in the shared link configuration, such as access level, permissions, password protection, expiration date, or vanity URL.

TriggerPolling

Add a star to an item

Stars a channel, file, file comment, or a specific message in slack.

ActionInstant

New File Version Uploaded

Triggers when a new file version is uploaded to a file in Box. This trigger monitors a specific Box file and fires when new versions are detected.

TriggerPolling

Add call participants

Registers new participants added to a slack call.

ActionInstant

New Item Added to Folder

Triggers when a new item (file, folder, or web link) is added to a folder in Box. This trigger monitors a specific Box folder and fires when new items are detected.

TriggerPolling

Add emoji

Adds a custom emoji to a slack workspace given a unique name and an image url; subject to workspace emoji limits.

ActionInstant

Folder Properties Changed

Triggers when a folder's core properties change in Box. This trigger monitors a specific Box folder and fires when changes are detected in properties like name, description, modification time, parent folder, item status, or shared link settings.

TriggerPolling

Add reaction to message

Adds a specified emoji reaction to an existing message in a slack channel, identified by its timestamp; does not remove or retrieve reactions.

ActionInstant

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When this happens · Trigger

Do this · Action

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