To select the AWS region for MailBluster, choose the one that best matches your subscribers’ location. Make sure to select this same exact region when requesting Amazon to increase your sending limit.
If your AWS account is already out of the Sandbox for a specific AWS region, continue using that same region for MailBluster to maintain consistency.
For example, if your sending limit has been increased in the US East (N. Virginia) region, use that region for MailBluster as well.

In MailBluster, “US East (N. Virginia)” needs to be selected as SES region when setting up AWS credentials like Access key and Secret Access Key.
