Message formatting works the same way whether you are using Slack, Microsoft Teams, or Discord.
Tokens are in the format [type.property].
Message format can be customised when editing/creating an Action.
Default
By default, the message format is
[action.name] was triggered by [user.name].
Types
Action
Allowed properties
name: name of triggered action with link.
Event
Allowed properties
name: name of the event which triggered the Action with link.
Accessing event properties
You can also access any property on the event that triggered the webhook by using event.properties.your_desired_prop.
This can be a property set by PostHog, such as event.properties.ip, and it can also use any custom properties you set, like event.properties.username.
If a property does not exist on the event, the webhook message will say undefined for the property.
For example, the followijg message format:
[user.name] triggered [action.name] from [event.properties.country]
Would yield the a message like the one below, if the property country is not set on the event:
John Doe triggered Pageview from undefined
User
Allowed properties
name: user's username, email, or distinct ID depending on availability.ip: IP address used by user when the action was triggered.os: user's Operating System.browser: user's Web Browser.browser_version: version of user's Web Browser.host: URL of PostHog instance user connected via.time: timestamp of Event.pathname: HREF path Action was triggered on.device_id: ID of user's device.screen_width: width of user's screen.screen_height: height of user's screen.initial_referrer: domain user visited before Event ($directfor direct visits).