If you didn't create your products yet, visit the following article: Whistle Upsell - How to Create Categories and Products
- Go to the Automations tab inside Whistle
- Select Automated Messages
- Click + New Automated Message
- Create Title - not seen by guest
- Select Recipients
- Add Conditions (if any)
- Schedule when the message runs
- Select Days when message runs
- Select Send Time
- Chose automation type - Message Guest
- Choose if you want to enable Multi-Reservation Messaging (optional)
- Select Messaging Channel if you have any others enabled (eg. email, whatsapp)
- Click Upsell

- Copy product link or Create Cart with the products available in upsell
- Click Create