Manual:$wgSMTP/AWS SES

This page provides an example for setting the  configuration parameter if you would like to use Amazon Web Services Simple Email Service for sending emails by your wiki.

If your AWS SES instance is configured in "Sandbox" mode you should change your settings to configuration parameters  and   to an email address that you have verified in the AWS SES console.
 * Note about the "Sandbox" mode

If new users register and they are not in the verified list, they will not get the email and you will be limited to 200 emails per day!

Thus make sure that you get out of the "Sandbox" mode once you tested that everything works.