Revolutionizing Email Marketing Strategies: How ChatGPT, Claude, Gemini & Copilot Can Help
- Katie Lach
- 2 days ago
- 8 min read
While purpose-built email marketing platforms like Mailchimp or HubSpot offer ready-made automation, the “Big 4” AI models—ChatGPT, Gemini, Claude, and Copilot—bring unmatched flexibility, creativity, and advanced analytics. These models can generate high-quality copy, analyze customer behavior, and even integrate with existing marketing platforms to supercharge your campaigns.
For growing businesses, these tools help craft engaging subject lines, write compelling body text, and personalize campaigns at scale—all while saving time and reducing costs.
ChatGPT is one of the most versatile AI tools for email marketing (and most common!). With natural language processing and prompt-based creativity, it’s ideal for writing subject lines, personalizing campaigns, and generating variations for A/B testing.
Key Features
Write subject lines, email body copy, and calls-to-action
Can analyze tone, sentiment, and optimize for engagement
Integrates with other marketing platforms smoothly
Most common type of AI chosen - over 51%
Free Trial: Basic text generation, limited speed
ChatGPT Plus: ($20/month) Access to GPT-4 with higher accuracy and creativity
ChatGPT Team: ($30/month) Unlimited usage, security, and administrative oversight
ChatGPT Pro (Individual): ($200/month) Access to more powerful models and complex problem-solving
*Pricing as of 2025
Pros and Cons
PROS | CONS |
Excellent for generating creative, personalized content | Requires careful prompting to get best results |
Wide integration ecosystem with marketing platforms | Doesn’t manage campaigns directly |
Affordable entry-level pricing | May generate copy that feels generic without strong guidance |
ChatGPT Prompt Examples
Prompt
“I am an email marketer working on A/B Testing for a small business which is a boutique. I need to send promotional emails to my subscribers, but I need two different emails. Can you write both emails with the purpose of promoting a new product? Generate two different subject lines. Each subject line should be under 50 characters, have a friendly & exciting tone, and be optimized for high open rates."
Result
Email A (Playful & Conversational)
Subject Line A: ✨ New Arrival Just for You!
Body:
Hi [First Name],
We've just added something special to our boutique shelves—and we think you'll love it. Our brand-new [Product Name] is here to add a fresh pop of style to your wardrobe.
Why you'll love it:
Chic design that stands out
Perfect for everyday wear or a night out
Limited stock (once it’s gone, it’s gone!)
Be the first to shop the new collection today and make it yours before anyone else.
👉 [Shop the New Arrival]
With love,
[Your Boutique Name]
Email B (Elegant & Exclusive)
Subject Line B: Your Boutique Exclusive Is Here 🌸
Body:
Hi [First Name],
We're so excited to share our newest arrival with you—introducing the [Product Name], a piece designed with you in mind.
Crafted with care and made to elevate your everyday style, this limited-release item is already turning heads.
✨ Available now, only at [Your Boutique Name].
Don't miss your chance to be among the first to own it.
[Discover the Collection]
Warmly,
[Your Boutique Name]
Claude is designed to be conversational, safe, and human-like. It’s particularly effective for writing empathetic, customer-focused emails. Claude excels at drafting long-form newsletters, personalized outreach, and customer service responses that feel authentic.
Key Feature
Writes empathetic, natural-sounding email copies
Handles long-form content (newsletters, multi-part campaigns)
Prioritizes brand safety and reduces risks of off-brand messaging
Free: Limited daily usage
Claude Pro: ($17/month) Access to Claude 3.5 Sonnet with higher limits.
Enterprise: (Custom) Higher usage, data security, team collaboration
*Pricing as of 2025
Pros and Cons
PROS | CONS |
Produces warm, human-like copy ideal for customer engagement | Less technical integration support than ChatGPT or Copilot |
Excellent for long-form content like newsletters | Limited availability of plugins and extensions |
Strong focus on safe, brand-appropriate output | Can be slower at generating high-volume outputs |
Claude Prompt Examples
Prompt
"I am an email marketer needing to send promotional emails to my subscribers. I work at a small business boutique. Please draft a customer re-engagement email for subscribers who haven't opened in 90 days based off the following guidelines below: Tone: warm, respectful, never pushy. Length: 200–250 words. Personalization: include placeholder for customer’s first name and last purchase, show related items similar to what was last purchases. Add a gentle CTA to explore our [new arrivals page]. Provide a short subject line (max 45 characters) and preview text (max 150 characters)."
Result
Customer Re-engagement Email Template
Subject Line: We miss you, [First Name]! ✨
Preview Text: Your perfect style is waiting – see what's new since your last visit to our boutique.
Email Content:
Hi [First Name],
We noticed it's been a while since your last visit, and we genuinely miss having you as part of our boutique family!
I hope you've been loving your [Last Purchase Item] – it was such a perfect choice for you. Since your purchase, we've curated some beautiful new pieces that I think would complement your style wonderfully.
Based on your love for [Last Purchase Item], you might adore our latest arrivals in similar styles:
Elegant [related item 1] in seasonal colors
Timeless [related item 2] with delicate details
Versatile [related item 3] perfect for any occasion
We've been busy adding fresh pieces that capture the same quality and attention to detail you appreciated before. No pressure at all – I just wanted to share in case something catches your eye.
Your style preferences matter to us, and we'd love to help you discover your next favorite piece when you're ready.
[Explore Our New Arrivals]
Thank you for being part of our community, [First Name]. Whether you visit tomorrow or months from now, we'll be here with pieces chosen just for customers like you.
Warmly,
[Your Name]
[Boutique Name]
Copilot is Microsoft’s AI productivity assistant, integrated directly into Outlook, Word, and Teams. For email marketing, Copilot is especially useful for drafting campaigns, summarizing customer feedback, and automating routine communication tasks.
Key Features
Built into Outlook for drafting and refining professional emails
Summarizes long email threads and extracts insights.
Works with Microsoft 365 data (Excel, Teams, Dynamics CRM).
Microsoft 365 Copilot Chat: (Free) Basic email marketing, IT control
Microsoft 365 Copilot: ($30/month) Integrated into Outlook, Word, Excel, and Teams
Microsoft 365 Business Basic and Microsoft 365 Copilot: ($36/month) Up to 300 additional users, Custom business emails, 10+ additional apps
Enterprise: (Custom) Advanced security and scalability
*Pricing as of 2025
Pros and Cons
PROS | CONS |
Deep integration with Microsoft Office ecosystem | Available only with Microsoft 365 subscription |
Saves time by automating drafting and summarization | Limited standalone functionality outside the ecosystem |
Great for teams already using Microsoft 365 | Pricing can be high for small businesses per user |
Copilot Prompt Example
Prompt
"I am an email marketer needing to send promotional emails to my subscribers. I work at a small business boutique. Can you please draft up a email following up on an item that they were looking at online that they didn't purchase? Body: remind them of the product they were last looking at. show them similar items low in the email. please include a CTA to return to shopping. Keep email under 300 words, professional and concise Please create 2 variations I can insert directly into Outlook."
Result
Variation 1: Warm & Inviting
Subject: Still thinking about [Product Name]?
Hi [First Name],
We noticed you were recently checking out [Product Name]—a favorite among our boutique shoppers. It’s stylish, versatile, and perfect for [season/occasion].
[Insert image of Product Name here]
If it’s still on your mind, we'd love to help you make it yours. And if you’re exploring options, here are a few similar pieces we think you'll love:
[Insert image of Similar Item 1] [Insert image of Similar Item 2] [Insert image of Similar Item 3]
Our collection updates often, so now’s a great time to take another look.
👉 [Return to Shop]
Thanks for browsing with us, [Your Name] [Business Name]
Variation 2: Sleek & Direct
Subject: Your recent favorite is still here
Hi [First Name],
You recently viewed [Product Name], and we wanted to make sure you didn't miss out. It’s one of our most-loved pieces and still available—just waiting for the right home.
[Insert image of Product Name here]
If you're still deciding, here are a few similar styles that might catch your eye:
[Insert image of Similar Item 1] [Insert image of Similar Item 2] [Insert image of Similar Item 3]
Ready to take another look? Your next favorite might be just a click away.
👉 [Return to Shop]
Warm regards, [Your Name] [Business Name]
Key Features
Generates subject lines and content based on SEO/Google trends
Integrates with Google Sheets for campaign planning and data analysis
Strong at summarizing performance reports from analytics data
Free: Access via Google Workspace tools with basic functionality
Gemini Advanced: ($19.99/month via Google One) Access to Gemini 1.5 Pro with advanced reasoning.
Gemini AI Ultra: ($249.99/month) Highest level of AI generation with tools for video generation, 30TB of storage, and exclusive tools for business workspaces
Enterprise: (Custom) For teams needing large-scale deployment
*Pricing as of 2025
Pros and Cons
PROS | CONS |
Strong integration with Google ecosystem (Docs, Sheets, Gmail) | Limited integrations beyond Google ecosystem |
Excellent for data analysis and reporting | Still developing creative writing capabilities compared to ChatGPT |
Affordable premium option compared to some competitors | Less customization for tone than Clause or Copilot |
Gemini Prompt Example
Prompt
"I am an email marketer needing to send promotional emails to my subscribers. I work at a small business boutique needing to announce our new fall product line launch. Help me write an email campaign for it. Generate an email which a subject of under 50 characters, have an exciting tone, and be optimized for high open rates. Generate it based off this information. Tone: professional but fun! Audience: current and potential customers. CTA: “Shop the collection today” Include engagements pictures and videos. Include a short subject line (max 40 characters), preview text, and body copy (150 words). Please provide 2 alternative versions for testing."
Result
Version 1 (Playful & Exciting)
Subject: It's Official: Fall Faves Are Here!
Preview text: Your wardrobe just got a whole lot cozier.
Body copy:
Hello!
Get ready to fall in love with your new favorite looks. We're so excited to announce that our new autumn collection is officially live! We've been working hard to create pieces that are not only stylish but also incredibly comfortable and versatile for the season. From chic sweaters to must-have accessories, this collection is all about helping you create a signature style that feels uniquely you.
Shop the collection today
(Check out the beautiful photos and videos below to see the collection in action!)
Version 2 (Chic & Trendy)
Subject: A New Season Has Arrived...
Preview text: Discover what we've been working on.
Body copy:
Hi there,
The new season is finally here, and with it comes a fresh lineup of styles. Our new fall collection has been thoughtfully curated to bring you the best of modern fashion and timeless elegance. Each piece is designed to be a standout addition to your wardrobe, whether you're dressing for a weekend getaway or a busy workday. We can't wait for you to experience the quality and style of this collection.
Shop the collection today
(Scroll down to see our lookbook and behind-the-scenes videos!)
Finding the Right AI Model for Email Marketing
Each of the Big 4 AI models brings unique strengths to email marketing:
Best for Creativity & Flexibility: ChatGPT.
Best for Data & Analytics Integration: Gemini.
Best for Human-Like, Empathetic Copy: Claude.
Best for Microsoft 365 Users & Workflow Automation: Copilot.
If your business already relies heavily on either Google or Microsoft, Gemini or Copilot may fit seamlessly into your workflows. For creative content generation, ChatGPT and Claude are standout options. Experimenting with these AI models can enhance your email campaigns, improve personalization, and scale communication with ease.
About the Author
Kathleen Lach is a Finance and Marketing student at Baldwin Wallace University who specializes in creativity and data-driven strategy. With hands-on experience as a Digital Marketing Specialist, she has developed expertise in digital engagement strategies, brand modernization, and community building across platforms.
With certifications in Excel, Canva, and HubSpot, she is passionate about helping organizations effectively connect with their audiences through innovative digital solutions.
Connect with Kathleen Lach on LinkedIn
