
\ud83d\udcc8\ud83d\udcc9\ud83d\udcca
| Platform | Pricing | Only free issues | Publishes | Infrequently | |
|---|---|---|---|---|---|
| Issues | 25 | Founded | 6 years ago | Last Issue | a month ago |
| Active | |||||

There’s a graveyard of startups who were right about the future but wrong about the timing.
Webvan and Instacart both bet that consumers would buy groceries online. The difference between an $11B market cap and zero? About a decade.
It’s...
We spend a lot of time talking about AI taking jobs. We spend almost none asking whether they are the right ones.
Before automated switching, there were telephone operators, plugging and unplugging cables into boards while supervisors time...
Last week, $300B of SaaS market cap evaporated in a matter of days, marking the start of the SaaS-pocalypse. Naturally, AI was to blame. Never again will growth rates resume. Market sizes have permanently shrunk. The era of high-margin recu...
VC has always been a power law business. But never more so than today.
Historically power laws described exits. Now, it’s about fundraising:
12 firms collected 50%+ in the first half of 2025. It was 9 last year.
63% of capital we...
AI is throwing venture investing into turmoil. Just look at DeepSeek’s bombshell. First, "GPT wrappers" were fragile; now, it’s the models themselves under question. And while hindsight is 20/20, our job is to predict outcomes today.
Soft...
Subscribers, engagement, traffic and sponsorship for Day by Jay.
| Subscribers | Engagement | 63 | Monthly Web Visits | ||
|---|---|---|---|---|---|
| Accepts Sponsors | Estimated Cost per Ad | ||||
The writers behind this newsletter.
Thoughts of the day, usually circulating around venture capital, engineering, and other frameworks
You can find recent issues that have been published by Day by Jay 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 Day by Jay, 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 Day by Jay 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 Day by Jay 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 Day by Jay. 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.