Email marketing still outperforms most other channels on ROI — the same has been true for years and it hasn't changed. What has changed is how much time it takes to run it well. A functioning email program needs a welcome sequence, regular broadcast emails, re-engagement campaigns for subscribers who've gone quiet, promotional emails for launches and offers, and constant subject line testing. For a small team or a solopreneur, that's a lot of writing.
ChatGPT handles email copy well for a practical reason: most email formats follow predictable structures. A welcome email always needs to deliver on the sign-up promise, set expectations, and make a first impression. A re-engagement email always needs to acknowledge the gap, offer something worth coming back for, and make it easy to unsubscribe gracefully. Once you have a prompt built for each of these, you're filling in variables, not writing from scratch.
These five prompts cover the email marketing tasks that have the biggest impact on list growth and revenue.
Prompt 1: Write Subject Lines That Get Opened
Subject lines are the single piece of email copy with the clearest, fastest feedback loop — open rates tell you what works within 24 hours of sending. And yet they're routinely written last, in the least time, with the least thought. This prompt generates a batch of options across different styles so you can test and learn what your specific list responds to.
The prompt:
Write 10 email subject lines for an email about [topic].
The email is going to [subscriber type — new subscribers / existing customers / cold leads / lapsed buyers].
The email's goal is [drive a click / announce something / re-engage / promote an offer].
My brand tone is [describe it — e.g. direct and no-nonsense / warm and conversational / playful].
Include a mix of: 3 curiosity-driven subject lines, 3 benefit-focused, 2 questions, and 2 that use a number or specific detail. Avoid clickbait. Don't use emoji unless I ask.
What to do with 10: A/B test two each send if your platform supports it. Over six to eight sends you'll have real data on which format your list opens. That data is worth more than any best-practice article.
Prompt 2: Write a Welcome Email Sequence
The welcome sequence is the highest-read email series you'll ever send — open rates on welcome emails regularly run 50–70% because subscribers are paying the most attention in the first few days after signing up. A weak welcome sequence wastes that attention window. A strong one sets expectations, delivers value, and begins building the relationship that eventually converts.
The prompt:
Write a [number]-email welcome sequence for new subscribers who signed up via [what they signed up for — lead magnet, free download, newsletter, contest]. My business is [brief description].
My audience is [who they are].
What I want this sequence to accomplish: [build trust / educate them on what I offer / move them toward a first purchase / introduce my community].
One email per [day / every 2–3 days].
For each email include: subject line, preview text, and full body copy.
Tone: [your brand voice].
Keep each email under [word count — e.g. 300 words].
Don't pitch until at least the [third / fourth] email.
The "don't pitch until" instruction: This is worth including explicitly. AI defaults to including a product mention or CTA in every email because that's a common email marketing pattern. A welcome sequence that pitches too early loses trust before it's built. Let the early emails earn the later ones.
Prompt 3: Write a Broadcast Email That Gets Clicks
A broadcast email — a one-off send to your full list or a segment — works best when it leads with value before it asks for anything. The emails that get the highest click rates tend to have a single, clear CTA rather than multiple options, and a body that makes the CTA feel like a natural next step rather than the point of the whole email.
The prompt:
Write a broadcast email for my [type of business] email list.
The email is about [topic or purpose].
The goal is to get readers to [click to X / reply with Y / take action Z].
My audience is [description].
The email should lead with [a useful tip / a story / a piece of news / a question] before getting to the CTA.
Tone: [your brand voice].
Length: under [word count].
Include: subject line, preview text, and full body with a clear single CTA. Don't include multiple links — one destination only.
On length: Email click rates don't correlate cleanly with length. What matters more is whether the body earns the CTA — whether the reader feels like clicking is worth their time based on what came before. A 150-word email that earns the click outperforms a 400-word email that doesn't.
Prompt 4: Write a Re-Engagement Campaign for Inactive Subscribers
Subscriber lists go stale. Someone signs up, opens the first email or two, then stops engaging — not because they're uninterested but because life moved on and the habit didn't stick. A re-engagement campaign targets these lapsed subscribers with a specific goal: either get them back or give them a graceful exit.
The prompt:
Write a 2-email re-engagement campaign for subscribers who haven't opened or clicked in [timeframe — e.g. 60–90 days].
My business is [brief description].
Email 1: acknowledge the gap without being dramatic, offer one genuinely useful piece of content or value, and make it easy for them to either re-engage or unsubscribe cleanly.
Email 2 (sent [X days later] to anyone who didn't open Email 1): shorter, more direct.
Give them one clear choice — stay in or opt out — with a single link to update their preferences or unsubscribe.
Tone for both: warm, not passive-aggressive. Don't guilt-trip them for going quiet.
Why include an unsubscribe option explicitly: A clean list is more valuable than a large one. Subscribers who haven't engaged in 90+ days hurt your deliverability metrics. Giving them an easy exit keeps your list healthy and your open rates accurate.
Prompt 5: Write Promotional Email Copy for a Launch or Offer
Promotional emails are the hardest type to write well because readers are most skeptical of them — they know a pitch is coming, which means you have less goodwill to work with. The promotional emails that convert tend to lead with something real (a specific result, a genuine reason to act now, a story) rather than opening directly with the offer.
The prompt:
Write a promotional email for [product or offer].
The offer is [what it is and what the terms are — price, discount, deadline if real].
My audience is [description — what they want, what they're skeptical about].
The email should: open with [a specific result / a real customer outcome / a direct statement of what they get] rather than leading with the product name.
Handle the main objection, which is [what stops them from buying — price / time / skepticism / already tried something similar].
One CTA only.
Tone: [your brand voice].
Under [word count]. Don't manufacture urgency unless there's a real deadline — if there is one, include it.
The "don't manufacture urgency" instruction: Important to keep in. AI trained on promotional email patterns will often insert urgency signals ("limited time," "don't miss out") even when no deadline exists. If the offer is ongoing, that line will feel dishonest to readers who've seen the same email twice.
Building a System, Not Just Sending Emails
These five prompts cover the most impactful email types, but email marketing works as a system — the welcome sequence feeds the broadcast calendar, the broadcast calendar feeds the re-engagement window, and promotions are more effective when they follow a period of genuine value. Once you have prompts built for each stage, you're not writing each email cold — you're running a workflow.
If you want a pre-built library of AI prompts covering the full email marketing workflow for your specific business type, the relevant ProntoKits pack has 20 prompts structured exactly this way.
Browse Prompt Packs by Business Type →
Related reading: ChatGPT Prompts for Marketing: 6 That Work for Small Teams → | How to Write an AI Prompt That Actually Works for Your Business →
Quick Questions
These prompts are free in this guide — why would I buy a pack?
The prompts here are a sample — a few from one angle, designed to show you what's possible. A ProntoKits pack gives you 20 prompts built across the full workflow for your specific role: different task types, different contexts, different output goals. It's the difference between a recipe and a full cookbook. Access is instant, the format is a .docx file you can use immediately in any AI tool.
Do these prompts work with both ChatGPT and Claude?
Yes. Every prompt in our guides and packs is written to work in ChatGPT, Claude, Gemini, or any other major AI tool. The principles behind a well-structured prompt are the same across platforms — role, context, format, and constraints. You don't need a specific tool to use them.
What format does the prompt pack come in?
All ProntoKits packs are delivered as .docx files — standard Word documents that open in Microsoft Word, Google Docs, or any compatible app. You get instant access after purchase. No subscriptions, no logins, no software to install.
Will these prompts write the full email for me, or do I still have to do the work?
They write a strong, usable first draft. You still need to review, add any specifics only you know, and make sure it sounds like you. The goal is to cut the blank-page time, not the thinking time.
