Adding public contact from request to aws

Question

I'd like to add a public contact from request on a static website hosted on AWS s3 wiht cloudfront. This is what I found after researching a bit but I want to know which is the best.

1/ Front-end JS send a message to an SNS topic and subscribe my email to it (but it means that I need to share an AccessKey in public)

2/ Front-end JS send a message to SNS, trigger a Lambda function which process and send email via SES.

3/ Front-end JS send a POST request to a public API Gateway, trigger a Lambda function which process and send email via SES

If someone has some other solution please share.

Answer 1

Third one seems to be the best and easiest to implement. And also you do not require to keep your access keys in client side in this case.