Slack + Todoist

Mark tasks as completed in Todoist when new reactions are added in Slack

Keep your task list streamlined and up-to-date with this workflow. When a new reaction is added in Slack, it will effortlessly mark the corresponding task as completed in Todoist. It's a simple way to maintain your productivity without leaving your chat platform. This integration helps ensure that your to-do's are always ticked off as soon as they're done.

When this happens...
New Reaction Added
Triggers when a reaction (aka reactji) is added to a message in a public #channel.
TriggerInstant
automatically do this!
Mark Task as Completed
Marks a task as being completed.
ActionWrite

Start free with email

Start free with Google

Start free with email

Start free with Google

Free forever for core features
14 day trial for premium features & apps

Supported triggers and actions

- Trigger for Bot Messages?
- Optimized data
Trigger
Instant
Try It
- ChannelRequired
- Trigger for Bot Messages?
- Optimized data
Trigger
Instant
Try It
- Channel
- User Name
- Shared
Trigger
Instant
Try It
- Search QueryRequired
- Optimized data
Trigger
Polling
Try It
- Zap Identifier
- Access type
Trigger
Instant
Try It
New Saved Message
Triggers when you save a message.
Trigger
Instant
Try It
- TextRequired
- Remind when?Required
- Remind who?
Action
Write
- ChannelRequired
- Add Zapier app to channel automatically?
- Message TextRequired
- Send as a bot?
- Bot Name
- Bot Icon
- Include a link to this Zap?
- Attach Image by URL
- Auto-Expand Links?
- Link Usernames and Channel Names?
- Schedule At
- File
- Thread
- Send Channel Message?
- Zap Id
Action
Write
- Channel NameRequired
Action
Write
- Approval request messageRequired
- ChannelRequired
- Bot name
- Bot icon
- Approvers
- Approve button URL
- Approve button label
- Include a Decline button?
- Include a Details button?
- Ask responders for confirmation?
Action
Write
- First Name
- Last Name
- Title
- Email
- Display Name
- User
Action
Write
- Stop on errorRequired
- HTTP MethodRequired
- URLRequired
- Query string parameters
- Additional request headers
- Body
Action
Write
Delete Message
This action deletes an existing message in a specific channel on Slack. You need to provide the channel ID and the message timestamp as inputs.
Action
Write
Create Private Channel
This action creates a private channel in Slack.
Action
Write
Edit Message
This action updates a specific message sent by the same Authenticated user on Slack. You need to provide the Channel ID, the Timestamp of the message to be edited, and the new text for the message.
Action
Write
- Search QueryRequired
- Sort By
- Sort Direction
Action
Search
- IDRequired
- Return Raw Results?
Action
Search
- UsernameRequired
- Return Raw Results?
Action
Search
- ProjectRequired
Trigger
Polling
Try It
- ProjectRequired
- E-Mail AddressRequired
Action
Write
- TaskRequired
- SectionRequired
Action
Write
- ProjectRequired
- CommentRequired
Action
Write
- Project
- TitleRequired
- Note
- Section
- Assigned To
- Due Date (Human Formatted)
- Due Date (Raw Formatted)
- Priority
- Labels
Action
Write
- Api Docs Info
- Stop on errorRequired
- HTTP MethodRequired
- URLRequired
- Query string parameters
- Additional request headers
- Body
Action
Write
- NameRequired
Action
Search
- Email AddressRequired
Action
Search
- NameRequired
- Project
- TitleRequired
- Note
- Section
- Assigned To
- Due Date (Human Formatted)
- Due Date (Raw Formatted)
- Priority
- Labels
Action
Search or write

New Channel
Triggers when a new #channel is created.
Trigger
Instant
Try It
- Include Alias
Trigger
Instant
Try It
- Username
- Highlight Word
- Trigger for Bot Messages?
Trigger
Instant
Try It
- ChannelRequired
- Trigger for Bot Messages?
Trigger
Instant
Try It
- Channel
- Reaction
- User
Trigger
Instant
Try It
New User
Triggers when a new Slack user is created / first joins your org.
Trigger
Instant
Try It
- ChannelRequired
- UsersRequired
Action
Write
- Send Multi Message
- Message TextRequired
- Send as a bot?
- Include a link to this Zap?
- Attach Image by URL
- Auto-Expand Links?
- Link Usernames and Channel Names?
- Schedule At
- Zap Id
Action
Write
- ChannelRequired
- Add Zapier app to channel automatically?
- Message TextRequired
- Send as a bot?
- Bot Name
- Bot Icon
- Include a link to this Zap?
- Attach Image by URL
- Auto-Expand Links?
- Link Usernames and Channel Names?
- Schedule At
- Zap Id
- File
- Thread
- Send Channel Message?
Action
Write
- ChannelRequired
- TopicRequired
Action
Write
- Status Text
- Status Emoji
- Expiration Time
Action
Write
Remove User from Channel
This action removes a specified user from a specified channel in Slack.
Action
Write
Retrieve Thread Messages
This action retrieves all the messages sent to a specific thread in a selected channel.
Action
Write
Find Public Channel
This action will find a public channel in Slack using either the channel's ID or name.
Action
Write
Get Message by Timestamp
This action retrieves a specific message from a conversation history in Slack using the message's timestamp.
Action
Write
- EmailRequired
- Return Raw Results?
Action
Search
- Full NameRequired
- Return Raw Results?
Action
Search
- Project
Trigger
Polling
Try It
New Project
Triggers when a new project is created.
Trigger
Polling
Try It
- TaskRequired
Action
Write
- TaskRequired
- CommentRequired
Action
Write
- NameRequired
Action
Write
- TaskRequired
- TitleRequired
- Assigned To
- Due Date (Human Formatted)
- Due Date (Raw Formatted)
- Priority
- Labels
Action
Write
Get Project Collaborators
Get all collaborators for a specific project
Action
Write
- NameRequired
- Project
Action
Search
- NameRequired
Action
Search or write

About Slack

Slack is a platform for team communication: everything in one place, instantly searchable, available wherever you go. Offering instant messaging, document sharing and knowledge search for modern teams.

Learn more

Related categories

Team Chat

Similar apps

About Todoist

Managing millions of tasks, Todoist is an online task management app and todo list. It has Web, iPhone, Android, Chrome, Firefox, Outlook flavors (and more!).

Learn more

Related categories

Task Management

Slack + Todoist

Mark tasks as completed in Todoist when new reactions are added in Slack

Supported triggers and actions

New Public Message Posted Anywhere

New Message Posted to Channel

New File

New Message From Query

New Pushed Message

New Saved Message

Add Reminder

Send Channel Message

Create Channel

Request Approval

Update Profile

API Request (Beta)

Delete Message

Create Private Channel

Edit Message

Find Message

Find User by ID

Find User by Username

New Incomplete Task

Invite User to Project

Move Task to Section

Add Comment to Project

Create Task

API Request (Beta)

Find Project

Find User

Find or Create Item

New Channel

New Team Custom Emoji

New Mention

New Message Posted to Private Channel

New Reaction Added

New User

Invite User to Channel

Send Direct Message

Send Private Channel Message

Set Channel Topic

Set Status

Remove User from Channel

Retrieve Thread Messages

Find Public Channel

Get Message by Timestamp

Find User by Email

Find User by Name

New Completed Task

New Project

Mark Task as Completed

Add Comment to Task

Create Project

Update Task

Get Project Collaborators

Find Task

Find or Create project.

About Slack

Related categories

Similar apps

Chatwork

Microsoft Teams

Twist

About Todoist

Related categories

Similar apps

Trello

Asana

Google Tasks

Related Zap Templates

Related Zap Templates