Fundraising Fox

Max Greenwald

Founder

Founder at Warmly,

San Francisco, California, United States

FoundedWarmly, · YC

About

Founder of Warmly, an AI-powered sales prospecting and outreach platform.

LinkedIn ↗X / Twitter ↗
Latest on 𝕏

maximus greenwald @maxpgreenwald

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 -

Jun 30, 2026 · ♥ 5

maximus greenwald @maxpgreenwald

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 https://t.co/W5EiuICBUf

Jun 30, 2026 · ♥ 101 · ⇄ 9

maximus greenwald @maxpgreenwald

(6/6) Reply rates on our warmest segment: 2% to 6%. 3x with one orchestration step. Setup takes 5 minutes. Open any orchestration. Add the AI Email step. Set the filter. Write the goal in plain English. Test. Save. Playbooks for each play dropping in the coming days!

May 12, 2026 · ♥ 2

Founder at Warmly,YC S20

Intro paths

YC

Max went through Y Combinator (Summer 2020) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Gustaf Alstromer — the partner who ran Warmly,'s batch and knows the company first-hand. YC profile ↗

→

In turn, Max can intro founders to Warmly,'s investors below.

Warmly,'s investors · 8

Earl Grey CapitalFelicis VenturesMatchstick VenturesMaven VenturesNFXRTP GlobalScribble VenturesY Combinator

Co-founders at Warmly,

CBCarina Boo
Carina BooFounder
AZAlan Zhao
Alan ZhaoFounder

Experience

  1. HubSpotBringer of Warm Leads & GTM Agentscurrent2026 — present
  2. Warmly, (acquired by HubSpot)Cofounder & CEOcurrent2019 — present
  3. YPOMembercurrent2022 — present
  4. Sequoia CapitalScout2022 — 2023
  5. IgniteSTEMFounder, EdTech Nonprofit2015 — 2022
  6. ForbesForbes 30 Under 30, Enterprise Technology 20212020
  7. Y CombinatorAlumni, S202020
  8. TechstarsAlumni, Boulder2020
  9. On DeckAlumni, ODF22019
  10. GoogleProduct Manager - Google Chrome2019
  11. GoogleAssociate Product Manager (APM) - Google Maps & Photos2017 — 2019
  12. GoogleAssociate Product Manager Intern2016 — 2017
  13. HackPrincetonHackathon Organizer2014 — 2016
  14. Federal Trade CommissionCyber Security Intern2015
  15. iD Tech CampsProgramming Instructor Intern2014
  16. Internship with Ken BurnsDocumentary Film Intern2012

Education

  1. Princeton UniversityBachelor's degree, Computer Science & Public Policy
  2. Kent Denver SchoolHigh School

Skills & more

Demand Generation44Storytelling35Revenue Generation8Customer Service44Social Media6Sales6Marketing11Time Management5Event Planning15Retail3Research4Social Media Marketing6
+12 moreSocial NetworkingComputer ScienceData AnalysisEntrepreneurshipStart-upsProduct ManagementMicrosoft OfficeMicrosoft ExcelPowerPointMicrosoft WordPhotoshopFacebook

Languages Spanish

From Max's professional profile.

Founder mafias

Y Combinator mafia8,668

Also came through, then founded or led a company.

Sam AltmanPresidentFounded LooptFred EhrsamYC Summer 2012Founded CoinbaseMatt HuangYC Winter 2011Founded HotspotsTrae StephensYC Winter 2022Founded PursuitDelian AsparouhovYC Summer 2014Founded Nightingale +1Justin KanYC Winter 2018Founded Rye +3

+ 8,661 more

Techstars mafia153

Also came through, then founded or led a company.

Brandon PatonMentorFounded Glider +2Weiting LiuMentorFounded Everyday.me +2Sebastian FischmeisterTechstars Detroit Accelerator 2016Founded Labforge Inc +2Jeremy AchinCloud Class 2013Founded hos +1Armistead WhitneyTechstars Boulder Accelerator 2024Founded Preparis +1Justin HughesTechstars Space Accelerator 2020Founded Revolution RE +1

+ 146 more

Princeton University mafia109

Also came through, then founded or led a company.

Luke EvninBachelor’s DegreeFounded Mpmcapital +1Sharam Fouladgar-MercerEngineering DegreeFounded Signos +1Savraj SinghBachelor of ScienceFounded ContestMachine +1Jordan LeePhD (ABD) → MA 2012Founded Collections +1Matt JosephBachelor of Arts - BAFounded Locent +1Atray DixitBSEFounded Oncko +1

+ 102 more

HubSpot mafia19

Also came through, then founded or led a company.

Ernie ParkProduct Group Lead - Pricing & PackagingFounded MicroEvalAlex PatriquinSalesFounded CircaTejas ManoharSoftware Engineer InternFounded HightouchRyan NeuDirector of Sales, SMBFounded VendrThariq ShihiparSoftware EngineerFounded MultiverseAlan ZhaoProduct ManagementFounded Warmly,

+ 12 more

Same school

Also attended Princeton University553

Fabrice GrindaCo-founder & Managing Partner at FJ LabsAndrewAdvisor at Clear VenturesChristal NgAssociate at Golden Gate VenturesDavid CoatsManaging Director & Co-Founder at Correlation VenturesDan MoreheadFounder & CEO at Pantera CapitalGeoff YangCo-Founder at Redpoint Ventures

+ 547 more

Shared employers

Also worked at YPO188

Alex ChachavaInvestor at Leta CapitalRaoul Oscar FianoInvestor at DN CapitalJeff BergerVenture Partner at FJ LabsRouven DresselhausInvestor at Cavalry VenturesRobert CoppedgeChief Executive Officer at Echo Health VenturesDan MalvenVenture Partner at Alpha Partners

+ 182 more

Also worked at Sequoia Capital178

Michael MoritzFormer Partner at Sequoia Capital; Senior Adviser at Sequoia HeritageDoug LeonePartner at Sequoia Capital; former Global Managing PartnerRoelof BothaAdvisor & former Steward at Sequoia Capital; SpaceX board memberJason CalacanisFounder of LAUNCH; host of This Week in StartupsAlfred LinPartner at Sequoia CapitalMatt HuangCo-founder and Managing Partner at Paradigm

+ 172 more

Also worked at Y Combinator336

Garry TanPresident & CEO of Y CombinatorJessica LivingstonCo-founder of Y CombinatorDaniel GrossMeta Superintelligence Labs; co-founder of NFDG and Safe SuperintelligenceAlexis OhanianFounder & General Partner of Seven Seven SixMichael SeibelPartner Emeritus at Y CombinatorDalton CaldwellCo-founder of Standard Capital; Partner Emeritus at Y Combinator

+ 330 more

Also worked at Techstars424

Brad FeldCo-founder of Foundry and TechstarsRustyAdvisor at Clear VenturesHouman HaghighiPartner, Business & Corporate Development at Menlo VenturesIsabelle StyslingerSenior Associate, Rise of the Rest at RevolutionWesley BarrowPartner at Correlation VenturesJack Bixby LucasGeneral Partner at Lucas Venture Group

+ 418 more