Hi @j.kisters
Zaps are best suited to work on an individual record (e.g. Card) basis rather than in bulk (e.g. Cards).
More advanced solutions generally involve an app’s API.
App APIs can be used in Zaps with the Code app or Webhooks app.
Code: https://zapier.com/apps/code/help
Webhooks: https://zapier.com/apps/webhook/help
You can use the Schedule app to trigger Zaps are defined intervals: https://zapier.com/apps/schedule/integrations
You may want to consider using these Zap steps.
- Trigger: Slack - New Pushed Message
- Action: Trello - Create Card
- Action: Delay (for 4 hours)
- Action: Trello - Find Card (map Card ID from step 2)
- Action: Filter (exclude completed Trello Cards)
- Action: Slack - Send Channel Message (or other option)
Also, check out the Butler Power-Up from Trello: https://help.trello.com/article/1198-an-intro-to-butler