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1/In the last 1️⃣5️⃣ weeks I’ve published a #purplecow thread every week.
Purple Cows 🟣🐮 are things that make someone or something unique or remarkable.
And so begins my realization that there may be a framework for how to be unique or remarkable. Early thoughts 👇
maximus greenwald retweeted
Excited to introduce @Cosign: the curated professional network for the startup community: cosign.co
Our goal is to create the following:
- A comprehensive startup directory of investors, companies, and operators, including what they worked on and who they worked on it with.
- Cosign graph: Who shaped your career? Who were you actually in the trenches with? Who would work with you again? Who thinks you’re someone to watch?
- Durable reputation: Great endorsements happen every day on X and disappear into the feed. Cosign attaches those signals permanently to people and companies.
- Discovery: Who are the best fintech angels? Which AI companies should I watch? Who are the best designers?
- Intent network: Privately signal “I’d invest in them,” “I’d hire them,” “I’d work with them,” or eventually even “I’d acquire this company.” Match people when interest exists on both sides.
Imagine if Wikipedia, LinkedIn, and OG AngelList had a baby. Though Cosign is a community, not a business.
In order to join, you need to be cosigned. Or you can apply directly.
David Booth and I started this idea 7 years ago but didn’t have the firepower to make it work. Now we do.
No one has really touched LinkedIn in 20 years. Excited to take a swing.
cosign.co
Big news: @HubSpot (NYSE: HUBS) is acquiring @warmlyai .
Well that feels surreal to write. Today, I feel just as excited as 7 years ago when I was starting up!
Back then, I was giddy. Just a guy with an idea & a few cofounders hoping to change the world of GTM forever.
And then reality struck - building a company was hard! Every day we learned a little more, failed a little less and 6 pivots later advances in LLMs finally unlocked the product we’d been trying to build.
In 2023 we took years of battle scars building our own GTM & put everything we had into building AI Agents that would modernize how marketing & sales teams worked together. Enter HubSpot.
In 2023 we built our first integration. (It was HubSpot)
In 2024 we had 20 customers integrated with HubSpot
In 2025 we had 100 customers integrated with HubSpot
In 2026 we now have 223 paying customers integrated with HubSpot!
As Warmly has grown, HubSpot has always been there for us.
As Warmly’s AI Agents started booking meetings for customers, HubSpot’s Data Hub was a key source.
As Warmly’s Inbound Agent enticed & de-anonymized website visitors, HubSpot’s Smart CRM was where we stored chat transcripts.
As Warmly’s TAM Agent created differentiated fresh lead lists, HubSpot’s dashboards showed GTM Execs how much pipeline we got them.
And today, we’re joining forces to build the future of AI-native GTM and help our customers grow their business with both Warmth and HEART (if you know, you know).
So what happens next?
1/ To our customers: this is just the beginning. Thank you for taking a bet on us and making us into the business we are today. Stay tuned for more epic releases coming soon.
2/ To our Warmsters past and present: Every feature shipped, every customer won, every late night, every hard conversation, this company exists because you always exhibited our core value to always Add A Comma, in everything you do.
3/ To my cofounders new and old: @zhaolan_monk @carinaboo, Val @KeeganOtter7, Ryan - You’re my best friends, the reason I can tackle every curveball that was thrown our way. We’ve climbed mountains and persevered. Thank you.
4/ To our new teammates: Angela, Richa, Jared, Duncan, Yamini - we are stepping on the shoulders of giants. Can’t wait to build amazing AI-native solutions to 10x our customers!
5/ To me: 7 years ago you would have never believed you’d be here today, be proud. I only hope for you that, 7 years from now, you will continue to surprise yourself on what you can accomplish.
Signing off as we always have, but this time with more excitement than ever.
Warmly,
Max
Ps. A few additional thank yous:
Our board: @JamesCurrier (@NFX ) @asenkut (@felicis ), Ned, Tom (@rtpvc )
Our first believers: @NattyZ @elizabeth @hunterwalk , @eriktorenberg @ChristopherFong
X Factor players: David @HarryStebbings @Markeroonie , Brad
And of course - Alyssa and Brandon
maximus greenwald retweeted
Introducing Adaline 2.0 - The Agent Self-Improvement Layer
Adaline turns Traces into Behaviors,
Behaviors surface Issues,
Issues become auto-generated Evals + Data,
Adaline then generates new agent candidates and tests them.
You review the winners and ship!
(1/6) 🚨 AI Email Generation is live in Warmly.
A few months ago I pulled our own inbound report. 4 out of 5 of our warmest hand-raisers were dying in a templated nurture sequence written three quarters ago by someone who's not at the company anymore.
Reply rates: 2%.
(5/6) A few plays we run on our own funnel:
Qualified chat engager doesn't book. AI follow-up from the chat log.
Bombora research surge. AI references the topic.
Champion job change. AI welcome at the new account.
Buyer likes competitor's post. AI counter-positions.
(12/13) The attribution loop:
When an ad-clicker hits your site, Warmly tags them as coming from the ad and tracks every subsequent visit.
You see which contacts got served ads, visited from an ad, and ultimately closed. Even days or weeks after the click.