What do casinos do with inactive accounts? And what does inactivity mean - not logging in to your casino account or logging in say every two months without playing any game?
Depends on the ToS of the casino, but in general is that inactive accounts are those account that has no activity at all for specific period of time.
Yes it is usually related to login activity but again it depends on the ToS of the casino as it can be different.
I also learned that there is something called a dormancy fee or maintenance charges on those inactive accounts which covers for administrative cost incurred by those accounts. I learned that the deduction is from the remaining balance in the account. What about inactive accounts without any balance? On the other hand, what type of fee is charged on an active account?
Inactive account without any balance, of course you dont have to pay any fee since the fee is usually taken from the remaining nalance.
This kind of inactive account will be closed by the casino but casino will give a notification to the registered email of the account.