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5 Steps to Writing High-Converting Email Copy with AI Tools

Writer's picture: YarnitYarnit

The Email Marketing Challenge

Remember when a 2% click-through rate felt like a win? Fast forward to 2025, and inbox fatigue is through the roof. Audiences are swimming in a sea of bland, cookie-cutter emails. The game has changed—it's time to step it up!

According to HubSpot, 68% of marketing emails are never past spam filters. Let that sink in for a moment. Two-thirds of your carefully crafted messages are essentially shouting into the void. You're not alone in this struggle. Marketers everywhere are grappling with the same challenges:

  • Abysmal open rates that make you question your subject line sanity

  • Click-through rates that barely register on the chart

  • Conversion rates that feel more like a cruel joke than a KPI

What if there was a breakthrough that could transform email marketing? This is where AI reshapes how we craft, personalize, and optimize campaigns. AI-driven tools use advanced machine learning and natural language processing to craft highly relevant, personalized email content that speaks directly to each recipient. As per studies, AI-driven email personalization can lead to a 13% increase in click-through rates and a 41% rise in business revenue. AI-driven personalization redefines engagement—delivering subject lines with 99% relevance and dynamically adapting content based on user behaviour in real-time. 


It’s not just the future of email marketing; it’s the solution to improving your campaigns and overcoming the challenge of low open rates and engagement. Data-driven personalization powered by AI combines with marketers' emotional intelligence and brand expertise. The result? Campaigns that transform ordinary touchpoints into memorable brand experiences.

In this article, we’ll take you through how you can drive KPIs with your next email campaign with the help of AI tools. Let’s get started!

Benefits of Using AI for Email Marketing

  • Personalization at Scale: AI enables the crafting of tailored email content for various audience segments, driving improved engagement and higher conversion rates by addressing individual recipient preferences.

  • Improved Subject Lines and Preheaders: AI generates compelling subject lines and preheader text that capture attention and drive higher open rates, ensuring your emails stand out in crowded inboxes.

  • Consistency in Brand Voice: AI ensures that every email adheres to your brand’s voice, helping maintain consistency and reinforcing your brand identity across all communications.

  • Creative Idea Generation: AI assists with idea generation, providing fresh, creative concepts to overcome writer’s block and generate impactful, engaging email campaigns.

  • Content Auditing: AI audits content to ensure emails meet quality standards, align with marketing goals, and improve overall performance.



Key Steps to Write High-Converting Email Copies 

Step 1: Define Your Email Objective and Audience

Before crafting your email, define its purpose and audience. Are you welcoming new subscribers, promoting a product, or re-engaging inactive users? Even the best AI tools won't deliver results without a clear objective. 

This approach is critical when crafting cold emails. To enhance your cold email strategy, check out our blog for expert tips on writing the perfect cold email that drives better outreach and engagement.

When you integrate AI into your email efforts, it can elevate the personalization of your outreach. By analyzing past behaviors, purchase history, and engagement patterns, AI-powered segmentation helps tailor content at scale, ensuring each message resonates more deeply with your recipient.

Example: Miro defines its email objective clearly by guiding new users through onboarding with a structured, step-by-step approach. The email provides a welcoming tone ("Welcome on board! Let's get started."), followed by three actionable steps—creating a board, shaping ideas, and inviting teammates. It ensures clarity by breaking down essential actions with visuals and links for easy access.



Additionally, the email includes a support section ("If you need some help...") to encourage further engagement. This structured and user-focused approach helps recipients quickly understand how to get started, reducing friction and boosting product adoption.








 Tools to Use:

  • HubSpot – Uses AI to segment your audience based on behaviors, interactions, and preferences, delivering personalized emails that resonate with each recipient.

  • Yarnit –  Leverages language models to write high quality email copies tailored to your brand voice and audience.


Step 2: Craft Attention-Grabbing Subject Lines

Your subject line determines whether your email gets opened or ignored. Research shows that 33% of users choose to open emails because of catchy subject lines. AI can analyze successful subject lines, generate high-performing variations, and predict which ones will maximize open rates.

AI tools use emotional triggers, urgency, and curiosity to craft subject lines uniquely relevant to the recipients.



Vimeo’s subject line "The world of video is your oyster" grabs attention, sparks curiosity, and implies limitless creative opportunities. It aligns with Vimeo’s playful brand and sets the stage for an engaging email experience. They reinforce the theme in the email body with humor, making their messaging memorable and on-brand.

Tools to Use:

  • Jacquard– Jacquard uses AI to generate subject lines tailored for higher open rates by analyzing past campaign data and user behavior. It creates personalized, compelling subject lines that are optimized to drive engagement and improve email performance. 

  • Yarnit – It generates high-performing subject lines based on extensive datasets and allows you to refine their effectiveness with A/B testing capabilities.


Step 3: Personalize your Email Body Content

Once the email is opened, your content must resonate with the recipient. AI personalizes every element—intro, body, recommendations, and product suggestions—based on user data.

 How AI Helps:

  • Drafts email copy that feels one-on-one, not mass-produced

  • Adapts tone and language based on past interactions

  • Identifies pain points and motivations to craft persuasive messaging

Example:

For example Buffer  personalizes its email body with a friendly, conversational tone, making users feel welcomed ("I’m guessing it’s not every day you sign up for a new service."). It acknowledges the user's journey and suggests a relevant feature (browser extension) instead of overwhelming them. The email also encourages engagement by inviting replies for support or feedback, making interactions feel personal and accessible. This approach creates a human connection, enhancing user experience and engagement.




Tools to Use:

  • Copy.ai – It generates email bodies by analyzing user data to generate tailored content, adjusting tone, language, and recommendations based on individual preferences and past interactions. It creates engaging, one-on-one style emails that resonate with each recipient.

  • Yarnit – Yarnit crafts personalized email bodies with AI-driven audience analysis, brand voice, dynamic content, and behavioral triggers. It also uses personalization tokens, AI suggestions, templates, and A/B testing to craft engaging, tailored emails.

 Pro Tip: Always refine AI-generated content to match your brand's personality and tone.

Step 4: Optimize Your Call-to-Action (CTA)

A weak Call-to-Action (CTA) can ruin an otherwise great email. AI refines CTAs by tailoring them to each user, testing different variations, and placing them strategically for maximum impact.

How AI Helps:

  • Creates multiple CTA versions tailored to the recipient's behavior

  • Tests different CTA placements and wordings for best results

  • Personalizes CTAs based on user intent and engagement history

For example - Freshworks optimizes email CTAs through strategic placement, effective design, and personalization. For example, the "Browse plans" CTA is placed prominently after users are notified of their trial expiration, guiding them to the next step. The use of contrasting purple buttons against a gray background ensures high visibility. Personalization also plays a key role, as CTAs are tailored to the user’s trial status, with phrases like "Browse plans" and "Email us" addressing their next actions. The clean, minimalist design supports CTA visibility, and the supportive tone enhances user engagement. This approach likely increases conversions as users transition from free trials to paid plans.







Tools to Use:

  • Unbounce – It optimizes CTAs by testing variations and placements based on user behavior. It creates high-converting CTAs tailored to boost engagement and conversions.

  • Yarnit –Yarnit's AI-driven platform expertly analyzes audience intent to craft brand-ready, strategic CTAs specifically tailored for email performance

Pro Tip: CTAs should feel natural, not forced. AI helps optimize them, but human oversight ensures they align with your brand's voice.

Step 5: Humanize AI Output

AI-driven content is efficient, but a human touch is essential to make emails feel authentic and emotionally engaging.

How AI Helps:

  • Creates structured, data-backed content as a foundation

  • Adjusts tone and readability based on audience insights

  • Ensures grammatical accuracy and brand alignment

 How Humans Enhance It:

  • Inject personality ( humor, storytelling, or warmth)

  • Tweak AI suggestions to match brand voice

  • Add empathy to connect emotionally with the audience

Example:

AI may generate a generic email for a pet subscription box:

AI-Generated Email:

"Your next box is ready! Order now for your pet's next adventure."

With human refinement, it transforms into:

Final Email:

"Hey [Name], we know [Pet's Name] loves surprises! Our next box is packed with handpicked goodies just for them. Want a sneak peek? Click below—[Pet's Name] will thank you later!"

Tools to Use:

  • Grammarly – Refines tone and improves readability

  • Yarnit – Ensures AI-generated emails remain engaging and brand-aligned

Pro Tip: AI gets you 80% there, but human creativity makes the difference between generic and memorable.

Human+AI = Better Emails

For email marketing to succeed, the collaboration between AI and human creativity is key. AI brings data-driven insights and efficiency, while human marketers provide the emotional depth, intuition, and personal touch that resonate with audiences.These elements work together to create a powerful synergy. At the forefront of this evolution is Yarnit, a platform that merges AI's capabilities with human creativity to produce content that connects and converts.

The result? High-conversion email copies that are profoundly personalized and genuinely tailored to each recipient. Yarnit uses AI to create highly personalized content that resonates with each recipient. Our platform seamlessly integrates LLMs with sophisticated personalization engines, enabling marketers to craft messages that truly connect. While our A/B testing capabilities allow for data-driven optimization of subject lines, content, and call-to-actions. 

Yarnit's innovative approach combines the power of AI with human creativity, empowering marketers to design campaigns that not only capture attention but also drive measurable results. 

Conclusion

AI technology has revolutionized email marketing, providing tools to create highly personalized, engaging, and conversion-driven campaigns. You can significantly elevate your email marketing efforts by following these five steps.

Remember, the key to success lies in leveraging AI tools, like those offered by Yarnit, to handle the heavy lifting of data analysis and content generation. This frees your team to focus on strategy, creativity, and building genuine connections with your audience. Embrace the power of AI in your email marketing strategy, and watch your conversion rates soar to new heights.


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