Best personalized marketing emails tools in 2025

📊 AI model capabilities enhancement 🤖 AI response generation 🤖 Content generation automation 📊 Cost reduction in response generation 📈 Example 🤖 Fine-tuning language models 📈 Language model optimization 🔍 Lead scoring optimization 🔄 Model behavior training 📈 Model performance reliability 🔄 Prompt adjustment 📊 Quality output generation 💻 Recommendation 🔍 Relevance enhancement 🔄 Training example utilization