Slack Filters
Articles
gform_slack_field_value
https://docs.gravityforms.com/gform_slug_field_value/.
gform_slack_icon
This filter is used to dynamically change the icon being displayed with the message sent to Slack.
gform_slack_invite
This filter allows the invite user parameters to be modified before the invite is sent to Slack.
gform_slack_process_message_shortcodes
This filter can be used to enable shortcode processing in the Slack message.
gform_slack_username
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 Meta 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.