When customers approach their traffic, summary disk usage limit or disk quota, they get respective e-mail warnings.
To choose how closely to the limit these warnings will be issued:
When creating plans with plan wizards, you choose whether you want Parallels H-Sphere to e-mail order confirmations to users right after they buy resources. If you enable sending order confirmations, customers will receive them for every single bill entry, e.g. overlimit traffic. Order confirmations are sent from the e-mail address specified in the Look and Feel menu -> Company Info. If this feature is off, customers will get no order confirmations, even at the end of the billing period.
To turn sending order confirmations on or off:
After signup, users can change this option in their accounts.
To turn sending order confirmations ON or OFF for all your customers regardless of their current settings:
Forcing sending order confirmations on or off overrides current user settings. However it doesn't prevent customers from switching this option back afterwards for their own accounts.
You can configure the system to send clients automatic "No Charges Made for Your Account" notifications at the end of each billing period or month. To choose the rule, select Billing Settings in the Settings menu:
For credit limit based billing, customers are notified if their balance does not exceed credit limit. For anniversary based billing, they are notified if during given billing period or month there were no billing operations (charges for purchases or exceeded monthly resource limits).