Ah I should have clarified that "body" would be a shorthand of sorts. I'd still have an "html" and "text" alternative to satisfy the case where you want to set

Ah I should have clarified that "body" would be a shorthand of sorts. I'd still have an "html" and "text" alternative to satisfy the case where you want to set both, and in that case "text" and "html" are very meaningful. But the "body" makes the simple case, and the examples extremely clean too.