Is there a serverless, codeless way I can send an email with an attachment?

Is there a serverless, codeless way I can send an email with an attachment?

Is there a way I can do this with Step Functions?

The SES v2 API SendEmail action requires building the entire properly formatted and encoded MIME message. Is there any to build such a MIME message codelessly and serverlessly?

Is my only option to drop the codeless requirement and use Lambda?