When sending Gift Certificates, try:

Configuration ... E-Mail Options ... and set to true the:
Send Copy of Admin GV Mail Emails To - Status
Send copy of Admin GV Mail Status
0= off 1= on
Then, make sure that you have set the Email address for:
Send Copy of Customer Admin GV Mail Emails To
Send copy of Admin GV Mail emails to the following email addresses, in this format: Name 1 <email@address1>, Name 2 <email@address2>
Next, you need to fix a typo in the file:
/admin/gv_mail.php

and anywhere you see:
_DISCOUNT_COUPON_

change to read:
_GV_