Hi There
For sending Email AWS provides multiple options, like SES, SNS or you can built your own Mail server.
Can you provide some more specifics on your use case, so that I can recommend the desired service to go with.
BTW I'm a super expert in AWS.
Ranked #1 in AWS Freelancer Category.
You can have a look at my profile to view my past AWS experience.
https://www.freelancer.com/u/joystick220.html
Thanks
Joy