This filter is used to dynamically change the icon being displayed with the message sent to Slack.
This filter allows the invite user parameters to be modified before the invite is sent to Slack.
This filter can be used to enable shortcode processing in the Slack message.
This filter is used to dynamically change the username the message is being sent by before it is sent to Slack.
Slack Feed Meta
The Feed Object meta for the Slack add-on is an associative array containing the properties which determine how the add-on should process the form submission.