Brian BalfourEssays to help you build a growth machine. Subscribe 9MarketingGrowthPersonalDetailed essays on growth and user acquisition by Brian Balfour, Founder/CEO of Reforge, previously VP Growth @ HubSpot, to help you build a growth machine.Sent Weekly Written in EnglishSubscribersIssues SentLaunchedLast UpdatedAdded OnCreator Contact Tools Meta AdsSquarespaceLinkedIn AdsSubstackLinkedIn Newsletters Stats See how this newsletters subscribers and engagement have changed over time. Unlock with Pro Is this your newsletter? Get access to manage and update this newsletter listing at any time. ClaimThe Humans in the Loop: AI Newsletter for DevelopersPromotedAdvertise Here