Integration Service Activities

Last updated Feb 19, 2026

Send Message to User

Project compatibility

Windows | Cross-platform

Overview

Description	API Method	API Path
Send a message to an individual user in Slack.	POST	/send_message_to_user_v2

Input

Parameter	Description	Data Type
User	Select the user from the dropdown list or enter their ID.	string
Message	The formatted text of the message.	string
Send as	Whether to send the message as the app or the user.	string
Message fields	Key/value fields provided in the specified format.	string
Button actions	Comma-separated button action definitions.	string
Image URL	URL of a secondary image attachment.	string
Formatting options (parse)	Defines how Slack parses and formats the message.	string
Link names	Whether to automatically hyperlink and mention names.	boolean
Unfurl links	Whether to show link previews.	boolean
Bot name	Custom bot name (Bot Token only).	string
Bot icon	Custom bot icon (Bot Token only).	string
Attachment image URL	URL of the image displayed within an attachment.	string
Attachment Title	Title text for the attachment.	string
Attachment Color	Color code for attachment sidebar.	string
Message Timestamp	Timestamp used to update an existing message.	string
Metadata Event Type	The metadata event type included with the message.	string
Mrkdwn	Enables markdown formatting.	boolean
Unfurl Media	Whether to display expanded previews for media links.	boolean
Metadata Event Payload Title	Title inside the metadata payload.	string
Metadata Event Payload ID	ID inside the metadata payload.	string
Reply Broadcast	Whether a reply should also broadcast to the channel.	boolean
Attachment Title Link	URL associated with the attachment title.	string

Output

Parameter	Description	Data Type
Message timestamp	The ID (timestamp) of the message sent	string
Response	The output object representing the sent user message.	object

In API workflows, a single response object is returned as the output. Any required fields can be extracted directly from this object.
In RPA workflows, some output parameters may differ, but the necessary values can still be retrieved from the response object even if they are not explicitly exposed.

Example

You can provide the following input for Buttons actions and Message fields:

The final Slack button message looks as follows:

When you click the Reject button, a confirmation dialog box is displayed:

You can configure the response to the above button clicks in a separate workflow using the Button Clicked event. To ensure the button is clicked only once, use Send Button Response in the workflow along with Button Clicked to replace or delete the button message after first click.

For a detailed user guide, see Use Slack Buttons when an opportunity is won in the CRM system.

On this page