Hello,
Email edition is not related to HikaSubscritption since you're in HikaShop business feature.
If you do have questions regarding the variables in the "preload" of the email, that forum section would be appropriate.
Now if your question is related to the email preview for the HikaSubscription emails ; that's in our TODO list for a future release. Maybe not the next one since we almost reach our goals, but probably after.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.