IsMail v1.2.0 — Now Uses GPT 5

New Features

IsMail v1.2.0 — Now Uses GPT 5

August 10, 2025

We are excited to announce the release of IsMail v1.2.0, our most advanced update yet. IsMail is running on GPT 5 for faster, smarter, and more accurate results.

With this upgrade, your AI-powered sales email agent becomes even more capable, delivering higher-quality outreach, richer storytelling, and deeper personalization — all while saving you time and maximizing results.


🆕 What’s New in v1.2.0

1. Upgraded AI Core to GPT 5

We’ve migrated IsMail’s writing engine to the latest GPT 5 model. This upgrade means:

  • More natural, persuasive, and context-aware emails

  • Faster content generation — even for large campaigns

  • Richer storytelling that makes your brand voice more engaging and memorable

  • Smarter personalization using richer context from your data

2. Improved Personalization Logic

Our recommendation engine now uses enhanced tagging and profiling to select the most relevant email content for each audience segment. Expect better open rates, click-through rates, and conversions.

3. Optimized Feedback Loops

We’ve fine-tuned the automatic feedback system to:

  • Detect and learn from underperforming campaigns faster

  • Adjust tone, style, and timing in real-time

  • Maintain brand voice consistency across all messages

4. Smarter Integration with Database

We’ve improved the Directus GraphQL layer for:

  • Faster template and subscriber syncing

  • Reduced API latency

  • Better error handling in high-volume campaigns


💡 Why This Matters

The shift to GPT 5 in v1.2.0 makes IsMail:

  • More efficient — less time crafting emails, more time growing your business

  • More accurate — stronger targeting and personalization for your audience

  • More scalable — handle larger subscriber lists without slowing down

  • More compelling — richer storytelling that turns readers into customers


📈 What’s Next

We’re already working on A/B Testing Automation powered by GPT 5’s reasoning capabilities, plus deeper analytics so you can see exactly what’s working and why.

Sho Kaneko

Sho Kaneko

Administrator