MarginStack shows contribution margin after discounts, shipping, and goods sold, so D2C teams can see which orders, products, and channels make money. Connect Shopify, enter COGS, and optionally connect ads. The dashboard flags margin drift and weak channels with a recommended next step, plus a morning brief.

• Contribution margin by order, SKU, channel, and day
• Blended and channel CAC, estimated LTV, and payback
• Alerts when margins drift or a channel loses money
• Morning brief email of what changed overnight
• Health Score with a recommended next action