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

Jacob Lett is the founder of Bootstrap Creative, a digital marketing consultancy that helps Michigan manufacturers generate qualified leads through HubSpot, technical SEO, and Google Ads. With over a decade of hands-on experience, he acts as a direct partner for B2B companies seeking measurable ROI from their marketing investment.



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