SES - API TestRenderTemplate

I found that the SES API has this TestRender Template feature, I need to fetch the API and get the template with replacement data.

The docs specify the following: You can execute this operation no more than once per second.

Could be any problem using this API on a production env or was not built for this kind of things?

What I want to achieve is to get the template and send an email + attachments with the SendRawEmailAsync API