Post your teaser image to Stories with a countdown sticker set to your exact launch time. Everyone who taps 'Remind me' gets a free push notification when the drop goes live.
Set a hard cap of two SMS messages per month per subscriber and frame each text as a VIP reward — early access to new drops — rather than a promotional blast.
Smart collections are auto-populating product groups in Shopify — you set rules based on tags, and products matching those tags appear automatically. Tag each drop's products and the collection builds itself.
You likely have a funnel problem, not a content problem. Random posting with no tease, gate, or launch moment generates impressions but not transactions.