To send a gift voucher, you need to go to the page called Coupons - Gift vouchers. The link to this page is available in the section 'shopping trolley' in the right column.
While sending a gift voucher, you need to enter the following information:
The name of the beneficiary.
The email address.
The amount you want to send. (You are not bound to use the entire amount available in your shopping trolley.)
The message that will be attached to the message.
Make sure you have filled all the entries. They can be modified until you send the email.