Yes, it’s quick and easy to do this. You can top up your account via the upgrades store from inside your account. You can purchase credits online and they are immediately live and available to use.
If you’ve run out of monthly credits and just need a boost to send out some more, then this is a quick and easy way to do so.
You can also control your monthly package online – you can move your regular monthly subscription up or down. Package swaps take place on the 1st of each month.