I'm getting "Email address is not verified. " error message.

Question

Our website use Wordpress(Woocommerce), and I installed Fluent SMTP plugin, and I just setup Amazon SES(Still in Sandbox mode)

With Fluent SMTP in wordpress, I tried to send a test email from cs@mydomain.com to AAA@gmail.com , and I got this error message. 
SimpleEmailService::sendRawEmail(): Sender - MessageRejected: Email address is not verified. The following identities failed the check in region US-WEST-1: AAA@gmail.com Request Id: bb95cbc2-229a-4d3a-82b9-24cb3exxxxxx

Can you let me know why I'm getting this error message?
If I send cs@mydomain.com to cs@mydomain.com, and it went through.

By the way, 
I set Custom MAIL FROM domainI in SES--> emails.mydomain.com
Then do I have to use cs@emails.mydomain.com to send email or can I use cs@mydomain.com?

Thank you.

Answer

Make sure your ses reputation status shows healthy , and you have verified identities with domain then you can send mail from anyid@domainname , yes you need to use cs@mydomain.com

Answer

Hello - Make sure that you validate that you have gone through the verification and that it was successful. [Check out this troubleshoot guide](https://aws.amazon.com/premiumsupport/knowledge-center/ses-554-400-message-rejected-error/) for the error you are receiving. It goes through a few different reasons in which you would receive that error and should help you solve your issue.

Answer

I know this is old, but this will help others.
While you are in sandbox mode, you need to verify any address you are sending to. For example, myName@gmail.com.  
From the SES console, create a new identity > identity type > email address.

I'm getting "Email address is not verified. " error message.

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