Turn on email receipt
1. Go to 'Back office' -> 'Revenue centers'. Check 'Email receipt'. Note this revenue center should include the till you want to email receipt. The default revenue center is 'default'.
2. On the till, when a transaction is paid, there are 'Email' and 'Print and Email' buttons. If a customer is in the system, there is a option to 'Make this Email the default for this customer'. The same email will be automatically used next time.
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