How This Founder Doubled Email Conversions
When Jamie Nguyen started her solo marketing consultancy, she knew email would be her driving force.
Of course it wasn’t without its struggles. Writing consistent newsletters, segmenting her list, figuring out what subject lines worked and getting people to actually click is HARD!
Jamie had around 1,200 subscribers and her open rates were decent, but her click-through rates? Not so much.
She felt like she was yelling into the void, one campaign at a time.
“I’d spend two hours writing a single email,” she told us. “It felt like pushing a boulder uphill every week.”
That’s when she started experimenting with AI. Specifically, ChatGPT and MailerLite and within six weeks, her email conversions doubled.
Here’s how she did it—step by step.
Step 1: Let ChatGPT Break the Blank Page
Jamie didn’t start by asking ChatGPT to write entire emails. She just wanted to beat the blank page.
She prompted it with:
“Write five different subject lines for a weekly newsletter about solo marketing wins.”
In under a minute, she had hooks to work from. She picked her favorite, asked for variations, and then customized one herself. No more half-hour brainstorming sessions were necessary.
Once the subject line was locked, she did the same with the intro paragraph. She asked ChatGPT for a punchy lead with a little humor and a clear takeaway.
“It didn’t always get the tone right,” she said, “but it gave me solid bones to work with.”
Over time, she created a personal prompt library: hooks, transitions, CTA templates. All stored in a Notion doc, ready to copy and paste.
Step 2: Use ChatGPT to Personalize CTAs
This was the big one. Jamie started using ChatGPT to write call-to-actions based on different user segments.
MailerLite let her tag subscribers by interest: content, automation, or social strategy.
Instead of one generic CTA, she created three. Same offer, different language. ChatGPT helped her rewrite the CTA for each group.
For example:
- Content marketers got “Want 5 blog prompts from a robot?”
- Automation folks saw “See how I use AI to schedule 30 days in 10 minutes.”
- Social marketers read “Learn the post format that doubled my reach last month.”
By aligning the CTA with each segment’s interest, she saw a big shift.
Her click-through rate jumped from 2.1% to 4.3%.
Step 3: Let MailerLite Handle the Rest
Jamie kept her tech stack lean.
MailerLite did the scheduling, segmentation, and analytics.
ChatGPT handled content support and creative direction.
And Jamie got back her time.
“I went from dreading newsletters to looking forward to them,” she said. “The workflow just clicked.”
MailerLite’s automation let her build a simple welcome sequence. ChatGPT helped her script it. She added humor, GIFs, and personality. Open rates for the sequence hit 63%. Conversions nearly doubled compared to her older campaigns.
Step 4: Analyze and Iterate with AI
Once she had a few emails live, Jamie went meta.
She pasted her highest and lowest performing emails into ChatGPT and asked for comparisons. She prompted it with:
“What’s different about these two newsletters in tone, structure, and CTA style?”
It flagged things she hadn’t noticed. Passive voice. Weak endings. Overused emojis.
She used the feedback to tweak her future drafts. And it worked.
Each new campaign brought better numbers. And more confidence.
What Worked (And What Didn’t)
Jamie was quick to point out—ChatGPT didn’t do it all. But it reduced decision fatigue.
It didn’t replace her voice. It sharpened it.
It didn’t replace strategy. It accelerated execution.
What didn’t work? Asking ChatGPT to write full newsletters from scratch. They felt flat. Robotic. Off-brand.
But used as a co-writer? Game-changer.
The Results in Six Weeks
✅ Time to draft a newsletter dropped from two hours to 40 minutes
✅ Click-through rate increased from 2.1% to 4.3%
✅ Email conversions (people taking action) nearly doubled
✅ Jamie booked 3 new consulting clients through email alone
And she didn’t upgrade her plan. Or hire help. Or switch tools.
Just smarter workflows. AI in the right places. A little experimentation. And the commitment to test, measure, and improve.
Jamie’s Toolkit
If you want to try her system, here’s the stack:
- ChatGPT (Free or Plus) – for idea generation, segment-based rewrites, and creative edits
- MailerLite (Free or Paid) – for sending, segmenting, and automating your email campaigns
- Notion or Google Docs – for saving your best prompts, templates, and ideas
- Grammarly – for polishing tone and grammar before sending
Optional bonus: Jamie also used Canva for visuals when needed, but she kept it light and let the words do the work.
Marketing isn’t always about scaling up, sometimes, it’s about working smarter with what you have.
Jamie didn’t double her conversions with some secret playbook or magical software.
She did it by reducing friction, using the right tools, and putting her time where it mattered.
And if you’re stuck in a newsletter rut? This is your sign to try a smarter workflow.
One prompt at a time.
