Diagonal
Diana Kimball BerlinWeekly notes on the history and future of technology from the desk of Diana Kimball Berlin.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 129 | Founded | 6 years ago | Last Issue | 14 hours ago |
| Active | |||||
Read this Newsletter
diagonal.substack.comLatest Issues
Since a computer is math
Illustration for the July 17, 2026 edition of Worm Blossom, highlighted by Robin Sloan.
Hello from…San Francisco! And hello from jet lag, home again.
Here are five fragments that stuck with me last week…
Everyone should develop...
Giving thoughts somewhere to go
Marcin Wichary, photographed at the Old Joliet Prison, July 9, 2026.
Hello from milder weather. Back from Paris, quite a few iced chocolates in my past.
Here are five fragments that stuck with me last week…
Today working on a ph...
The other maps are like funhouse mirrors
A mix CD I made in high school, rediscovered by my old friend Sarah a few days ago. Double Neutral Milk Hotel!
Hello from Paris and the first Tuesday in July. We spent an unforgettable summer evening at Linda’s (deconstructed niçoise salad...
Three dimensions in two
Thomas Smillie, first official photographer of the Smithsonian, sometime 1890-1913. Untitled cyanotype.
Hello from London and the end of June. The heat finally broke.
Here are five fragments that stuck with me last week…
After 1...
The moving teeth of a multiplier wheel
Gottfried Leibniz, un-dated sketch circa 1670, inscribed with “Dens mobile d’une roue de Multiplication” (the moving teeth of a multiplier wheel), from computer-timeline.com.
Hello from Cannes! The sky today was the brightest blue.
Here a...
Key Facts
Audience Metrics
Subscribers, engagement, traffic and sponsorship for Diagonal.
| Subscribers | Engagement | 66 | Monthly Web Visits | ||
|---|---|---|---|---|---|
| Accepts Sponsors | Estimated Cost per Ad | ||||
Explore More
Authors
The writers behind this newsletter.
Bookworm turned PM turned VC turned PM at Gamma.
Social
Frequently Asked Questions
How can I access the email archive for Diagonal?
You can find recent issues that have been published by Diagonal 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.
How many subscribers does Diagonal have?
To see how many people subscribe to Diagonal, 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.
How can I advertise in Diagonal?
Newsletter advertising can be extremely effective when it's done right. Before you pitch Diagonal 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.
How much does it cost to sponsor a publication like Diagonal?
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 Diagonal using the contact information provided and ask for a copy of their media kit.
How can I find newsletters related to Diagonal?
Scroll up to where it says Related Newsletters to see other publications like Diagonal. You can also search our email newsletter directory to discover other newsletters that cover the topics you're interested in.
How do I contact Diagonal?
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.