I'm implementing an e-commerce where the user can add a email address during the checkout in order to send an invoice also to other people. This could be useful in case you want to make a gift for example.
I tried to add an extra field in the checkout procedure using extrafields module. Then, in the actions at order checkout I added the token related to the new email recipient. Once the order is completed I receive a message about problems sending the email.
As double check I tried to add this token in the object of the mail I send out to the customer (just to check if the token itself is working) and I find it is empty.