To automatically send email receipts in Stripe, enable the feature in your Customer emails settings. Navigate to your Stripe Dashboard and toggle "Successful payments" on in your Email receipt settings. Stripe only sends receipts for successful and completed payments. Additionally, if you want automated refund receipts, ensure that the "Refunds" option is also enabled in the same settings section.

Navigate to [https://dashboard.stripe.com/settings/emails](https://dashboard.stripe.com/settings/emails)

Stripe: Email Settings for Successful Payments and Refunds