You can arrange for your donors to receive a receipt for successful payments to your charity . To set up a customer receipt email in Stripe, login to your Stripe account at https://dashboard.stripe.com then click Settings (left) > Business Settings > Your Business > Emails > Email customers about.(https://dashboard.stripe.com/settings/emails).
Stripe also allows you to customise your email receipts with your charity's branding (See example below). To do that, click on Settings (left) > Business Settings > Your Business > Branding. https://dashboard.stripe.com/settings/branding