Choose the amount of credits closest to your average monthly usage on the next page.
Additional optional prepaid credits can be added to the account on a monthly basis.
This is a monthly subscription account.
At the beginning of each month the account is re-charged to the selected monthly limit. unused credits are NOT carried over. Monthly Account Terms
XEBM Bulk email prepaid accounts use prepaid credits. You can select the quantity of prepaid credits on the next page.
Unused prepaid credits are carried over each month.
Credits expire 12 Months from date of purchase. Prepaid Account Terms