Do subscription customers receive order emails from Shopify as well as Recharge?

Recharge sends subscription-specific emails that are managed through the Notifications settings.

Shopify sends order confirmation notifications for all orders and you can enable fulfillment notifications for the customer when the order is shipped. 

• Recharge Checkout on Shopify merchants can disable these notifications for subscription customers by toggling the setting in Notifications.
• Merchants on the Shopify Checkout Integration can disable the notifications for all orders through the Shopify settings. Reach out to Shopify Support for options to customize the notification setting.