Set Birthday Present Amount (Marketing: Hub). A daily scheduled job finds every customer whose stored birth date is today and who has not yet received this year's present. For each one it:

• adds the amount to their digital wallet as "Birthday Cashback" (only when the Marketing Hub module is active and the amount is above 0),
• records the year so they are not credited twice, and
• sends the "user_birthday" system email, which can mention the amount.

Customers must have a birth date on file, so include birthdate in your registration fields (or fill it in on their record). Setting the amount to -1 switches the whole job off (no credit and no email); 0 sends the email without a credit.