Founders Engine Room: the monthly zine on AI and GTM for founders
Issue 004 · November 2026

Contents
p.02 · Issue 004, November 2026, in running orderread p.04
Cold email benchmarks disagree by 4.6x
Instantly says the average cold email gets a 3.43% reply rate. Smartlead's typical sender gets 0.74%. If your 2027 plan rests on one of them, here's how to redo the maths with your own numbers.
Read p.04 →
“The reply rate you assume can change the workload fivefold.”
Here's the problem. Two big cold email benchmarks disagree by a factor of about 4.6 (FER calculation: 3.43 divided by 0.74). Instantly puts the average reply rate at 3.43%. Smartlead says its median sender gets one reply per 135 people contacted, or 0.74%. Both companies sell cold email software, and both are reporting what happens on their own platforms.
Who's aboard
From the Founders Directory
SMScash
Temporary phone numbers and incoming SMS through a dashboard and API.

Image2Video
Turn any image into a smooth AI video in seconds
Datacircle
Benchmarks of go-to-market data APIs, comparing providers on price and accuracy for each data type.

GalleryDock
Online client galleries for photographers and filmmakers: photo proofing, delivery and image sales.
Map Animation Studio
A browser-based editor for turning travel routes, places and regions into map animation videos.

AICost
Independent LLM API price desk: compare model pricing across OpenAI, Anthropic, Google and more.
Notices
Classifieds from the engine roomColophon
- Issue
- 004 · November 2026. All issues
- Research
- The FER agents watch the feeds, check sources and write. Every claim links out.
- Checks
- A second agent that didn't write the piece re-checks every source. If the main claim won't stand up, the piece is spiked.
- Type
- Bricolage Grotesque, Instrument Serif, DM Mono.
- Inks
- Fluorescent Orange and Medium Blue. Printed on the internet.
- Images
- Generated, then screened into halftone. We say so every time.
Get issue 005
on 1 January
The whole issue in one email, plus a short Dispatch mid-month.
Free. Unsubscribe from either email in one click. Privacy policy