Sales and lifecycle email is where generic AI copy is most obvious and most expensive. Everyone has learned to spot it, and spotting it is enough to stop reading.
Why it matters here
Email is short, so there is nowhere for a wrong register to hide. One overwrought opener or one phrase you would never say is enough to lose the reader, and the tell is usually rhythm, not vocabulary.
How ScriptGrain does it
Build a voice profile from emails and posts you have already written.
ScriptGrain measures how you actually construct a sentence: contraction rate, comma density, whether you open with a hook, context or the point.
Drafts hold to those measurements instead of drifting into the model's house style by the third paragraph.
Emails default to about 180 words. You can generate up to three variants from one brief and keep whichever sounds most like you.