Pay as you go gives you the cost-savings for one-off jobs in comparison to the monthly plans which require you to subscribe for at least a month. Its useful when you have a custom one-off job which needs to be verified right away. For smaller jobs throughout the month, we recommend using monthly plans. You can learn about purchasing monthly plans here.
Assuming that you signed into your account, click on "Purchase" link from the left hand menu. You will see a screen similar to this. From here, choose "Buy Credit" from the options available.
You now have two options. You can choose from the top up menu which has credit ranging from $20-$100 (twenty dollars being the minimum top up amount) or you can type in a custom top up amount. If you need $323.56 credit, you can do that simply by typing that figure here. This is the flexibility of using pay as you go credit. You get to purchase exactly the amount of credit you need.
Once you click "Top up", just follow the payment instructions from there. Once the transaction has been completed, you will be redirected to your control panel account. The credit will be added to your account within 2-5 minutes of the transaction being approved.
If you are unsure how much credit you need for a specific job, we suggest that you upload the files first by following this article. Once you arrive on Step 3, you will be presented with the exact cost of verifying your mailing list. You can use this amount to top up and then proceed with the verification.