
My personal Substack
| Platform | Pricing | Only free issues | Publishes | Weekly | |
|---|---|---|---|---|---|
| Issues | 568 | Founded | 3 years ago | Last Issue | 17 days ago |
| Active | |||||

A quick note for English-speaking readers: the rest of this post is in Spanish because the book is being published in Spanish first (June 2026). An English edition will follow not long after. If you only want to be notified when the Engli...
Seven mental models had been sitting in my inbox for weeks. Rough captures I’d jotted down while reading and watching things online: a stub here, a link there, a sentence I wanted to come back to. I asked the agent to flesh them out into pr...
1,222 notes, 24 categories, zero vendor lock-in. My knowledge management system fits on a thumb drive.
The oldest notes in this vault are from June 2013. Talk notes, loose ideas, book quotes, technical decisions, ref...
I’d been tweaking my augmented coding setup for months - adjusting CLAUDE.md rules, adding instructions for testing discipline, complexity management, incremental delivery. Things I’ve repeated to every team I’ve worked with, now repeated t...
Vasco Duarte invited me to be part of the Scrum Master Toolbox Podcast’s AI Assisted Coding series, and I couldn’t pass up the chance to talk about something I’ve been living and thinking about intensely for the past several months.
The co...
Subscribers, engagement, traffic and sponsorship for eferro’s Substack.
| Subscribers | Engagement | 66 | Monthly Web Visits | ||
|---|---|---|---|---|---|
| Accepts Sponsors | Estimated Cost per Ad | ||||
The writers behind this newsletter.
Lean/Agile mindset. Product Developer #XP #Lean #DevOps #People #extremeprogramming #productdevelopment (he/him)
You can find recent issues that have been published by eferro’s Substack on Reletter by scrolling up to where it says Latest Issues. Tap on the link for any of the most recent emails or hit More Issues to see older ones.
To see how many people subscribe to eferro’s Substack, simply upgrade your Reletter account. We provide readership numbers and lots of other stats for this newsletter so you can decide if it's worth reaching out to.
Newsletter advertising can be extremely effective when it's done right. Before you pitch eferro’s Substack as a potential sponsor or partner, make sure that you've done your research and checked its newsletter stats with Reletter.
Then, personalize one of our winning pitching templates and send it to the right person using the contact info provided.
Newsletter ad rates (or CPM) vary depending on many factors, including industry, number of subscribers, open rate, ad placement and more.
To find out how much an ad will cost, contact eferro’s Substack using the contact information provided and ask for a copy of their media kit.
Scroll up to where it says Related Newsletters to see other publications like eferro’s Substack. You can also search our email newsletter directory to discover other newsletters that cover the topics you're interested in.
Reletter provides this newsletter's website URL above, where you will often find their contact information. We also provide links to associated social media accounts and pitching templates so you can reach out fast.