Improve your AI prompts, study great B2B emails, and see HubSpot’s new AI agents | 3 Things Newsletter – April, 2025


Improve your AI prompts, study great B2B emails, and see HubSpot’s new AI agents | 3 Things Newsletter – April, 2025

Looking to sharpen your AI skills, supercharge your B2B email marketing, and get the inside scoop on cutting-edge martech? We’ve gathered some fantastic resources this week, directly from industry leaders like Google and HubSpot. Dive in to discover a practical guide to AI prompt engineering, inspiring B2B campaign examples, and a look at how new AI agents are set to revolutionize your workflow.

1. Master AI Prompt Engineering (Google Whitepaper)

A practical guide for writing better prompts for AI, straight from Google’s own experts. Perfect if you’re starting to integrate AI into your workflow.

2. 10 B2B Email Marketing Examples to Learn From (HubSpot Blog)

Solid examples you can borrow inspiration from when crafting your next B2B newsletter or drip campaign.

3. HubSpot Spring 2025 Product Updates: Meet the New AI Agents

HubSpot just dropped a major update with new AI agents. This is a preview of how CRM and marketing platforms will evolve in the next few years.

📝 Quick Marketing Tip

“No AI does not have curiosity and is often lacking in creativity and imagination… It is unable to ask a novel question that hasn’t been thought of before.”
— Demis Hassabis, CEO of Google DeepMind

AI is a powerful tool, but human creativity is still one of our greatest gifts from God. As you build campaigns and content, keep asking “What else could this do?” or “What’s a more imaginative angle?”

Prompt AI — and prompt yourself — to stay creative.


This first appeared in the April 2025 edition of my 3 Things email newsletter. Click here to subscribe to future editions.

About the Author

Jake Lett is a results-driven Detroit based B2B marketing consultant with 15+ years of hands-on experience managing SEO and PPC campaigns across manufacturing, SaaS, and professional services industries. He’s a Certified Google Ads Specialist and HubSpot CMS Developer who has personally managed budgets ranging from $500 to over $10,000/month.

Jake specializes in helping small businesses and solo marketers get more from lean ad budgets—using practical strategies that drive qualified leads, not just traffic. He shares real-world lessons on his blog, YouTube channel, and in his published books on digital marketing.



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