My Testing Setup
I used ChatGPT (GPT-4o, Plus at $20/mo) over six weeks across real marketing work: three email campaigns, two landing page rewrites, one product launch announcement, and ongoing LinkedIn and Twitter post drafts.
No fake briefs. Real campaigns with real deadlines and real audiences.
Two specific examples: I briefed ChatGPT on a reactivation email campaign for churned users, gave it our tone guide and three bullet points about the offer, and got a usable first draft in 90 seconds. I also used it to rewrite a landing page headline — tested five variations it generated, and one of them outperformed our original by 18% in a two-week A/B test.
Pricing: Free tier available. Plus at $20/mo removes message limits and gives access to GPT-4o. For marketing use across multiple projects daily, Plus is worth it.
1. Writing First Drafts of Email Campaigns
This is the highest-ROI use case I found. Email campaigns require a clear structure, a specific tone, and a call to action — all things you can brief into ChatGPT in three sentences and get back in 30 seconds.
I give it: the audience segment, the goal of the email, the main offer or message, and two or three sentences from our existing copy so it can match the tone. What comes back is rarely publishable as-is, but it is 70% of the way there. I edit the voice, sharpen the subject line, and adjust the CTA. Total time drops from 90 minutes to 25.
Where it struggles: humor and brand voice that is genuinely distinctive. If your brand sounds like a specific person, ChatGPT will sand that down into something pleasant and forgettable. You always need to put the personality back in.
2. Generating Ad Copy Variations
Writing ten variations of a Facebook ad headline is tedious. ChatGPT does it in 20 seconds.
I briefed it on a product feature launch: the feature, the target user, the pain it solved, and the tone (direct, no fluff). I asked for 15 headline variations under 40 characters. Got 15 usable options, picked three to test, threw the rest away.
That is the right way to use it for ads. Treat it as a variation machine, not a copywriter. You still need to pick the winners, test them, and understand why they work. ChatGPT generates volume. Judgment is still yours.
One thing to watch: it defaults to benefit-led headlines and avoids anything edgy or provocative. If your brand runs on contrast or controversy, you have to push it explicitly.
3. Repurposing Long Content Into Short Posts
You write a 1,500-word blog post. Now you need a LinkedIn post, three tweets, and a newsletter blurb from the same content. That used to take another hour. ChatGPT does it in three minutes.
Paste the article, ask for a LinkedIn post that pulls the most counterintuitive insight, a three-tweet thread, and a 80-word newsletter teaser. You get all three in one response. Edit for voice, post.
I do this every week now. The blog post is still written by a human. The distribution formats come from ChatGPT. It is a clean division of labor and it actually holds up.
Works best when the source content is strong. If the article is generic, the repurposed posts will be too. Garbage in, garbage out still applies.
4. How It Compares to Jasper
Jasper is purpose-built for marketing copy with templates, brand voice settings, and workflow tools built in. ChatGPT is a general-purpose chat interface.
For a solo marketer or small team, ChatGPT is more flexible and cheaper. Jasper's templates help if you are producing high volume across multiple brands with strict tone requirements. For most small SaaS marketing teams, ChatGPT Plus at $20/mo does 90% of what Jasper charges $49/mo for.
5. Where ChatGPT Does Not Work for Marketing
Strategy. Do not ask ChatGPT to tell you which channel to focus on, how to position against a competitor, or whether your pricing page is the reason you are losing trials. It will give you a confident-sounding answer that is entirely generic.
Also: anything requiring real audience insight. ChatGPT does not know your customers. It knows what marketing copy sounds like in aggregate. If your differentiation depends on a specific customer pain point you discovered through interviews, you have to bring that insight yourself. The tool cannot surface it.
And long-form SEO content that needs to rank. The output is too average, too safe, and too similar to everything else being generated at scale right now.
How to Get Better Results
Give it a real brief, not a vague request. Instead of "write a marketing email," write "write a 200-word reactivation email for SaaS users who churned three months ago, tone is direct and empathetic, the offer is a 30% discount, CTA is to restart their trial."
Paste two or three sentences of your existing copy every time. It is the fastest way to anchor the tone without writing a full style guide.
Ask for more variations than you need. Request ten, use two, throw away eight. The best option is rarely the first one.
Read the output out loud before editing. If it sounds like a press release, it needs more personality. That is always your job to add back in.
Bottom Line
ChatGPT Plus at $20/mo is worth it for any marketer spending more than two hours a week on first drafts. It will not make your marketing better on its own — but it will make you faster, and fast enough to test more ideas is genuinely valuable.
If you want purpose-built marketing workflows with brand voice controls and team collaboration, look at Jasper instead. For solo marketers and small teams who want flexibility over structure, ChatGPT wins on value.
Use it for drafts, variations, and repurposing. Keep strategy and voice as yours.
This post first appeared on saas.pet — daily AI tools ranked by community votes.
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