Slack + Webhooks by Zapier

Send custom requests with Webhooks by Zapier when new reactions are added in Slack

Stay on top of your team's reactions in Slack by setting up this efficient workflow. When a new reaction is added in Slack, it will trigger a custom webhook request, keeping you informed without delay. Easily track engagement, feedback, and important insights while maintaining a seamless communication experience for your team.

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!
Custom Request
Fire off a custom request by providing raw details. Very flexible but unforgiving.
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

What does this mean?

- Trigger for Bot Messages?
Trigger
Instant
Try It
- ChannelRequired
- Trigger for Bot Messages?
Trigger
Instant
Try It
- Channel
- User Name
- Shared
Trigger
Instant
Try It
- Search QueryRequired
- Raw Message
Trigger
Scheduled
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?
- 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
Action
Write
- ChannelRequired
- 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
- First Name
- Last Name
- Title
- Email
- User
Action
Write
- Api Docs Info
- HTTP MethodRequired
- URLRequired
- Query String Parameters
- Headers
- Additional Request Headers
- Body
Action
Write
Retrieve Thread Messages
This action retrieves all the messages sent to a specific thread in a selected channel.
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
Catch Raw Hook
Wait for a new POST, PUT, or GET to a Zapier URL. Gives the request body unparsed (max 2 MB) and also includes headers.
Trigger
Instant
Try It
- MethodRequired
- URLRequired
- Data Pass-Through?
- Data
- Unflatten
- Basic Auth
- Headers
Action
Write
- URLRequired
- Payload Type
- Data
- Wrap Request In Array
- File
- Unflatten
- Basic Auth
- Headers
Action
Write

New Channel
Triggers when a new #channel is created.
Trigger
Instant
Try It
- Include Alias
Trigger
Instant
Try It
- User Name
- Highlight Word
- Trigger for Bot Messages?
Trigger
Instant
Try It
- ChannelRequired
- Trigger for Bot Messages?
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
- 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
- ChannelRequired
- TopicRequired
Action
Write
- Status Text
- Status Emoji
- Expiration Time
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
Remove User from Channel
This action removes a specified user from a specified channel in Slack.
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
- URLRequired
- Key
- Deduplication Key
- Xpath
- Basic Auth
- Headers
Trigger
Scheduled
Try It
- Pick off a Child Key
Trigger
Instant
Try It
- URLRequired
- Query String Params
- Send As JSON
- JSON key
- Unflatten
- Basic Auth
- Headers
Action
Write
- URLRequired
- Payload Type
- Data
- Wrap Request In Array
- File
- Unflatten
- Basic Auth
- Headers
Action
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 Webhooks by Zapier

Webhooks simply POST data (or JSON) to a specific URL every time we see something new. Webhooks can also accept data (or JSON) to kick off a workflow in Zapier.

Learn more

Slack + Webhooks by Zapier

Send custom requests with Webhooks by Zapier when new reactions are added in Slack

New Public Message Posted Anywhere

New Message Posted to Channel

New File

New Message From Query

New Reaction Added

New User

Invite User to Channel

Send Direct Message

Send Private Channel Message

Update Profile

API Request (Beta)

Retrieve Thread Messages

Create Private Channel

Edit Message

Find Message

Find User by ID

Find User by Username

Catch Raw Hook

Custom Request

POST

New Channel

New Team Custom Emoji

New Mention

New Message Posted to Private Channel

New Saved Message

Add Reminder

Send Channel Message

Create Channel

Set Channel Topic

Set Status

Delete Message

Remove User from Channel

Find Public Channel

Get Message by Timestamp

Find User by Email

Find User by Name

Retrieve Poll

Catch Hook

GET

PUT

About Slack

Related categories

Similar apps

Chatwork

Microsoft Teams

Twist

About Webhooks by Zapier

Related categories

Related Zap Templates

Related Zap Templates