Your subscribers signed up for you. Keep it that way.
Weekly is relentless. Generic AI drafts sound like generic AI. One off issue and people quietly unsubscribe. ScriptGrain measures the voice that earned your list, then drafts inside it.
Here's the thing about "AI-sounding"
Readers can smell it in three sentences: the tidy parallelism, the hedge-everything tone, the paragraph that opens with "In today's newsletter landscape." That's not your voice. So the fix isn't a better prompt. It's measuring your actual voice first.
How it measures you, not "a" voice
ScriptGrain runs a two-pass analysis across 45 stylometric attributes, pulled from writing you already have. Sentence rhythm and length variance. Contraction rate. Where you put your parentheses. Your formality, your humour register, how you open a paragraph, whether you hedge or state things plainly. That's your voice profile. Every draft has to fit inside it.
Newsletter has its own shape
Of the 16 content types ScriptGrain drafts (long-form, LinkedIn, email, ad copy, press releases, and more), newsletter gets its own structure spec. The voice profile still runs underneath it: your rhythm, your recurring phrases, the way you open an issue. Structure and voice, both accounted for, every time.
You see the score before your readers do
Every draft comes back with a measured voice-match score and per-feature reasons: which bits read like you, which don't, and why. Not happy with it? A polish loop revises the draft toward your measured voice using exactly those divergences. No guessing whether this week's issue "sounds off."
It keeps learning what you actually keep
When you edit a draft, ScriptGrain learns from what you changed. Accepted edits feed back into the profile, closed loop. So issue forty reads closer to you than issue four did. That's the opposite of drift.
For the ones who write for clients too
Ghostwriting a newsletter for someone else? Brand mimic builds a profile from a client's public writing, with consent, one profile per client. Same measured approach, same structure specs, just pointed at their voice instead of yours.
Consistency is the product
Nobody subscribes to a newsletter for one good issue. They subscribe because week 30 sounds like week 3. That consistency, the thing that's hardest to grind out alone at 11pm on a Thursday, is exactly what a measured voice profile protects.
What it costs
Free tier: one voice profile, one full analysis, one free draft, no card required. Paid plans start at £12 a month for one profile and 40 generations. £29 a month gets you three profiles and 75 generations, useful if you write for more than one newsletter or client. Ten profiles run £99 a month. British English supported throughout, properly, not as an afterthought setting buried in a menu.
Try it on your own back issues
Bring three or four issues you're proud of. Let ScriptGrain measure what's actually distinctive about them, not what you assume is distinctive. Then draft the next issue inside that.
Your voice took years. Don't hand it to a generic model now.
Measure it once. Draft inside it every week after.
Questions
What do I need to build my voice profile?
Writing you already have. Three or four back issues works well; around 3,000 words total gives the analysis enough to measure. Paste them, upload files, or import from a URL. No new writing required.
Will drafts actually sound like me, not a generic newsletter?
Every draft is constrained by your measured profile: 45 stylometric attributes covering sentence rhythm, contraction rate, punctuation habits, humour register and more. Each draft returns a voice-match score with per-feature reasons, so you see how close it is before your readers do.
Does ScriptGrain understand the newsletter format specifically?
Yes. Newsletter is one of 16 content types, each with its own structure spec. The format shapes the draft's structure while your voice profile constrains how every sentence reads.
What does it cost to try?
Nothing. The free tier includes one voice profile, one full analysis and one free draft, no card required. Paid plans start at £12 a month for one profile and 40 generations.