Here is an edited (and evolving) list of the newsletters I subscribe to that I find interesting.
McKinsey Insights - from (you guessed it) McKinsey strategy consultancy
Retail Customer Experience - based in the US, it’s a useful way to stay close to the market from the customer perspective.
Benedict Evans - An Adreessen Horowitz VC partner, Benedict Evans sends a newsletter of brilliant links every week.
GDR - The regular newsletter from GDR Creative Intelligence, a brilliant retail trends consultancy that dishes up inspiration and analysis in equal measure.
Holition - This is one of the coolest businesses that defies description. They design digitally-enabled experiences for luxury brands that effectively blow your mind every single time.
Contagious - I’m still not sure exactly what they do, but their newsletter is always full of interesting inspirational creative ideas.