Your Soapbox Mailer account has two separate services you'll be using:
1) Soapbox Mailer - a monthly license fee, with an annual term
2) Amazon Simple Email Service - an email deliverability service
You need both of these to use Soapbox Mailer to send emails. The Soapbox Mailer monthly license fee will be automatically charged to your credit card we have on file at the beginning of each month. The Amazon Simple Email Service fee will be charged to your credit card on file with Amazon.com, directly from Amazon.com.