Send gift notification on payment instead of on completion

[Jon007]

Currently gift notification is only sent on completion of order.

Orders have to be moved manually to completion status, depending on your process this may be after despatch or after confirmation of delivery.

The requirement of a manual step means delay in sending the gift email, especially if the order also includes physical products which may require work to despatch/backorder etc.

Hook should be:
add_action( 'woocommerce_order_status_pending_to_processing_notification', ...
..
send email
...
bonus points: if there are no physical products in the order, automatically move to complete after sending the gift notification (warning, that may generate additional email)