Is AWS Account mandatory to use MailBluster?

MailBluster uses Amazon SES to send email campaigns. A verified and approved AWS Account of the client is required to connect with MailBluster. Since MailBluster doesn’t offer any SMTP server or service by itself, it will use your AWS Account to send all your email campaigns.
Please note that your AWS Account must be out of Sandbox (Restrictions set by Amazon when you first create an AWS Account) otherwise you won’t be able to send any emails from MailBluster.