Hi Remco
According to you post underneath I could make an extra option to mail shoppers even if the order is not paid yet. So just a order mail would suffice for us... That there is a manual trigger necessary for
make it done/finished ]when payment is done in ideal dashboard]
is ok....
WooCommerce will ony send an e-mail to your clients if the order status is changed from 'pending' to 'on-hold' or 'processing'. With the iDEAL Easy or Basic variant the order status will remain 'pending' until you manually checked the payment and manually updated the order status. If you don't use an iDEAL Easy or Basic variant there might be another problem.
On the following line you can see the WooCommerce code wich handles the sending of customer e-mail:
https://github.com/woothemes/woocommerce/blob/v1.6.5.1/classes/class-wc-email.php#L60
https://github.com/woothemes/woocommerce/blob/v1.6.5.1/classes/class-wc-email.php#L229
