If your AWS account is new, Amazon will place your account in the Amazon SES sandbox. While your account is in the Sandbox, you can use all of the features of Amazon SES. However, when your account is in the Sandbox, Amazon applies the following restrictions to your account:
1. You can only send mail to verified email addresses and domains, or the Amazon SES mailbox simulator.
2. You can only send mail from verified email addresses and domains.
3. You can send a maximum of 200 messages per 24-hour period.
4. You can send a maximum of 1 message per second.
To move your account out of Sandbox and to increase the sending limits, you have to make an application to Amazon. Please follow this step by step guide to make a successful application: