Docs Replenishment and Reorder Reminders

Consent

Reminders are marketing in many countries, so you choose who gets them.

ModeWho gets reminders
Checkbox at checkoutCustomers who tick Remind me before I run out. Shown in the classic checkout and the Checkout block when the cart holds a product with a period. Saved on the order.
Only customers who accepted marketingWooCommerce has no marketing consent of its own, so enter the order or user meta keys your newsletter plugin saves. A value of 1, yes, true, on or subscribed counts.
All customersEveryone with a qualifying order. Use it only where your law allows it.
Checkbox in the Checkout block
The opt in checkbox in the Checkout block.
Consent settings
Consent mode, label, guests and data removal.

A customer who stopped all reminders and later ticks the box on a new order has opted in again, so that stop is lifted. A stop for one product stays.