Write and design email people actually read
Most marketing email is skimmed on a phone in seconds, so design for that.
AI can rewrite a whole campaign to the mobile-first spec and draft subject-line variants. You supply the real offer and pick the winner, because voice and accuracy are yours.
Fastest path: one prompt, end to end
🤖 AI prompt — paste into ChatGPT / Claude
You are an email copywriter and designer for a DTC brand.
Paste my last campaign (subject + full body):
[paste]
Rewrite it to spec and return, in this order:
1. 3 subject-line variants, each UNDER 50 characters, value front-loaded, no clickbait, no invented claims.
2. Preview text (35-90 chars) that complements the subject, never repeats it.
3. A restructured body: single-column, mobile-first, ONE primary CTA, scannable (short paragraphs, one idea per block), 16px+ body text, tappable buttons at least 44x44px, live text (not baked into an image), roughly a 60:40 text-to-image ratio, and descriptive alt text on every image.
4. Flag anything in my original that would clip in Gmail (heavy HTML near the commonly-cited ~102KB limit), break with images off (image-only sections), or hurt deliverability (spammy words, all-caps, too long).
Use [bracket] placeholders for any real number, price, or claim. Do not guess or estimate any number. Every rule you cite must be one you can name a source for; if you can't verify a rule, say so rather than guessing. If you can't browse, still apply the layout rules and flag what needs manual confirmation.
Output: 3 subjects, preview text, restructured body, flags.
Or do it in 5 steps
- Subject under 50 characters, value first. On a phone the subject is mostly what decides the open before anything truncates, so keep it under 50 characters and lead with the concrete value (benchmarkemail.com, 2026). Draft 3 variants and A/B test them.
- One CTA. Decide the single action (shop the launch, claim the code) and point every element at it. Multiple CTAs split attention and lower clicks. Use tappable buttons at least 44x44 pixels so a thumb can hit them (benchmarkemail.com, 2026).
- Single-column, mobile-first. Most opens are mobile, and a multi-column desktop layout collapses badly on phones. Build one column, body text at 16px or larger, big tap targets, short blocks, then verify on desktop.
- Live text over image-only, with alt text. An all-image email shows nothing when images are blocked. A heavy email also gets clipped in Gmail near the commonly-cited ~102KB threshold, which hides the rest behind a "view entire message" link. Keep roughly a 60:40 text-to-image ratio, use real text with images as support, and add descriptive alt text so the message survives with images off.
- Scannable body. One idea per block, short paragraphs, a clear hierarchy. Nobody reads a wall of text on a phone; give the eye a path from headline to CTA.
Worked example (labeled): rewrite "Our Summer Collection Has Arrived and You Won't Believe the New Colors" (60 chars, vague) into "New summer colors, 20% off today" (32 chars, concrete value, one offer).
Shorter, specific, single offer, and it fits before truncation on a phone. A/B test it against your current style before making it the default.
A/B test subject lines continuously; keep the mobile-first structure fixed.