Marcel Kooi

Software developer with an interest in building useful products.

Products

Recent activity

Breathing Exercises

Breathing Exercises

Emotional intelligence more important than mental ability

IdeaGuide: 80+ ways to come up with ideas

Want to meet other newsletter creators?

Want to meet other newsletter creators?

Want to meet other newsletter creators?

Interview with Wes Kao, co-creator of Seth Godin's altMBA

Newsletter validation

Database for remote work and good coffee

List of newsletter directories

List of 50+ newsletter tools

How Blogging for Devs Reached 1K Subscribers in Under 2 Weeks

My many tabs lie heavily on my soul (and brain)

My many tabs lie heavily on my soul (and brain)

List of 50+ newsletter tools

How do you backup your database?

List of 50+ newsletter tools

List of 50+ newsletter tools

How I Built A $5K/Month Newsletter Tool