Kieran’s Substack - The AI Marketing Generalist

Kieran’s Substack - The AI Marketing Generalist

AI content all sounds the same. Here's a Claude Code skill to fix it.

Why everyone's using AI is creating the same content and how the Opposite-Start skill solves it

Kieran Flanagan's avatar
Kieran Flanagan
Apr 24, 2026
∙ Paid

One of our most successful AI initiatives at HubSpot has been integrating AI across all of our prospecting. It’s equated to over 10k additional meetings each quarter. What’s interesting is that the most valuable part of our AI prospecting agent wasn’t the prompts for crafting the email; it was the ‘do not say list’. Every phrase, opener, and structural …

User's avatar

Continue reading this post for free, courtesy of Kieran Flanagan.

Or purchase a paid subscription.
© 2026 Kieran Flanagan · Privacy ∙ Terms ∙ Collection notice
Start your SubstackGet the app
Substack is the home for great culture