Artificial intelligence (AI) is revolutionizing how marketers create email subject lines and content. With machine learning models capable of generating copy instantly, the landscape of email marketing is rapidly evolving.

But how do you harness AI tools effectively without ending up with robotic-sounding, impersonal messages?

In this post, we explore the best practices for combining AI-powered copy generation with human creativity to produce compelling, personalized, and high-performing emails in 2025.

Why AI Copy Generation Matters

• Speed and Efficiency: AI tools can generate multiple subject lines or emaibl drafts in seconds, enabling faster campaign launches.
• Data-Driven Personalization: AI analyzes historical engagement data to suggest optimized language tailored to your audience.
• Creative Inspiration: AI provides fresh ideas and phrasing that marketers might not have considered.

Balancing AI with Human Touch

AI-generated text should be a starting point—not the final product. To prevent sounding robotic:

• Review and edit AI drafts to inject brand personality and emotional resonance.
• Use AI tools like Jasper, Copy.ai, or ChatGPT for idea generation, then customize heavily.
• Avoid overusing AI clichés and jargon.
• Test subject lines with A/B testing to find human-approved winners.

Best AI Tools for Subject Lines and Content in 2025

• Copy.ai: Great for quick creative headline ideas.
• Jasper: Advanced AI with tone customization features.
• Anyword: Offers data-informed subject line optimization.
• Grammarly: Improves clarity and avoids AI pitfalls in tone and grammar.

Technical Integration with Custom Email Coding

Pair AI-driven copy with Templyft’s custom-coded templates to:

• Ensure correct token merges and dynamic content display without layout issues.
• Achieve perfect rendering across all devices despite varying content length.
• Keep the email lightweight and fast-loading regardless of content complexity.

Why Templyft?

Templyft delivers fully tested, AI-compatible emails with flawless code and personalized content blocks. Perfect for marketers who want cutting-edge AI benefits without sacrificing brand quality.