How Huberman Lab Built an Audience of Over One Million Subscribers with Kit

• Company: Huberman Lab
• Activity: podcast and educational content around neuroscience, health and performance
• Starting point: approximately 6,000 email subscribers
• Goal: convert the podcast and website audience into an owned audience
• Solution: forms, free resource, automations, welcome sequence and recommendations network in Kit
• Result reported by Kit: over one million subscribers

The figures presented in this article come from the case study published by Kit. ToolTrim analyses how the system works and the lessons applicable to creators and freelancers.

Andrew Huberman is an American neuroscientist and the creator of Huberman Lab, a podcast dedicated to how the brain works, health and daily habits.

Episodes are long, often heavily researched, and accompanied by resources that allow listeners to go deeper. This depth has built a loyal audience across podcast platforms, YouTube and the Huberman Lab website.

But a large audience on a platform remains a borrowed audience. An algorithm change, a drop in reach or a shift in usage patterns can sever the connection with a significant portion of that public.

Email was meant to allow Huberman Lab to reach its readers and listeners directly, without waiting for a platform to decide whether to show them the next piece of content.

Huberman Lab was not short of content. The problem lay in the transition between discovering an episode and subscribing to the newsletter.

Simply asking visitors to "join the list" would have been too vague. The team needed to give them an immediate reason to leave their email address, then extend that first interaction with consistent content.

Three needs emerged:

1. offering a resource valuable enough to trigger a sign-up;
2. welcoming each new subscriber automatically;
3. growing the list without depending solely on new publications.

Kit provided the infrastructure needed to bring these three steps together.

A resource that naturally extends the podcast

The team created Daily Blueprint, a free guide that brings together daily routines and protocols linked to the themes covered by Huberman Lab.

The proposition is precise. The visitor is not signing up to receive unspecified news. They receive a concrete resource, directly connected to the questions that led them to the podcast or website.

According to Kit, the automation associated with Daily Blueprint generated more than 580,000 subscribers.

This result highlights the importance of the link between public content and the sign-up promise. Kit facilitates delivery and tracking, but conversion starts with a resource the audience genuinely wants.

A form accessible across the entire site

Sign-ups do not depend on an isolated campaign. The form is present across the various pages of the site so that each episode, transcript or search can become an entry point into the newsletter.

Kit centralises subscribers acquired from these different touchpoints. The team can therefore grow its list without maintaining multiple databases or rebuilding an integration for each piece of content.

An automated welcome sequence

After sign-up, Kit triggers a sequence that delivers the resource and progressively introduces the Huberman Lab universe.

This step avoids the silence that so often follows a guide download. The new subscriber understands what they will receive, discovers other relevant content and develops the habit of opening messages.

Kit reports an open rate of 82% and a click rate of 54% for this sequence.

These results are exceptionally high. Above all, they demonstrate that automation steps in at the best possible moment: right after an explicit request from the subscriber.

Kit's recommendations network

Huberman Lab also uses Kit Recommendations, which allows compatible newsletters to recommend each other at the point of sign-up.

According to Kit, this channel brought in more than 72,000 additional subscribers.

The feature converts the trust already extended to one creator into a qualified discovery of another. For Huberman Lab, it adds a new growth engine that depends neither on paid advertising nor on the podcast's publication schedule.

Regular sends that maintain the relationship

Once the welcome sequence is complete, subscribers continue to receive content curated by the team.

Kit reports an average open rate of 65% for these sends. The list therefore does not exist merely to accumulate contacts. It becomes an active editorial channel that drives the audience back to episodes, resources and the broader Huberman Lab ecosystem.

The system reportedly took Huberman Lab from approximately 6,000 to over one million subscribers.

The main results presented by Kit are:

• more than 580,000 sign-ups attributed to the Daily Blueprint automation;
• more than 72,000 subscribers gained through recommendations;
• 82% open rate and 54% click rate on the welcome sequence;
• approximately 65% open rate on regular newsletters.

These figures should be read as the self-reported results of a client case study highlighted by Kit. They do not guarantee equivalent performance for any other business. They do, however, illustrate the platform's ability to support a large-scale growth journey.

Kit did not create Andrew Huberman's reputation or the value of his content. The product made it possible to convert that value into a direct audience more effectively.

Before this system, a listener could discover an episode, enjoy it and return to their platform. With Kit, that same journey can continue:

Content discovery → sign-up → resource delivery → welcome sequence → regular newsletter → new interaction.

The platform brings together forms, automations, sequences, recommendations and performance tracking. The team can manage the relationship in a single environment instead of assembling several separate services.

This is where Kit becomes a commercially strong product: it goes beyond sending a newsletter. It organises the growth and progressive monetisation of an owned audience.

Few creators have Huberman Lab's reach. The method is nonetheless applicable at a smaller scale.

1. Start from content that already works

Identify the article, video, episode or question that most consistently attracts your audience. The future resource should extend that interest.

2. Create a precise promise

A brief template, a diagnostic framework, a short method or a curated selection can be enough. Perceived value matters more than page count.

3. Connect every entry point to Kit

Place the form where intent already exists: most-visited content, service page, podcast description, creator profile or resource page.

4. Write a short welcome sequence

Three to five emails can deliver the resource, show how to use it, introduce your approach and suggest a next step.

5. Activate coherent recommendations

Choose a few creators whose audience shares a need with yours. Editorial compatibility matters more than the raw size of their list.

6. Measure the complete journey

Do not look only at subscriber count. Track the source of each sign-up, activation, clicks, replies and the progression towards your offer.

The Huberman Lab case is a compelling demonstration of Kit when a business already has content, an audience and a clear proposition.

Kit then provides what creators most often lack: a coherent system to capture attention, welcome each person, automate the right messages and grow the list through recommendations.

For a very simple newsletter, some features may feel advanced. For a creator who wants to turn their audience into a lasting commercial asset, Kit offers a particularly complete and scalable foundation.

Build your audience system with Kit →

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This ToolTrim case study draws on the article published by Kit about Huberman Lab, updated on 10 August 2026. The figures are those reported by Kit. The organisation of the case study, its interpretation and the advice for freelancers are produced by ToolTrim.

How did Huberman Lab surpass one million subscribers?

According to Kit, Huberman Lab combined a highly targeted free resource, forms placed across the entire site, an automated welcome sequence, regular newsletters and the Kit Recommendations network.

What role does Kit play in this growth?

Kit centralises forms, resource delivery, automations, sequences, recommendations and subscriber tracking. The platform converts the audience generated by content into a direct email relationship.

Does this method work for a freelancer?

Yes, at a different scale. A freelancer can start from their best-performing content, create a focused resource, set up a three-to-five email welcome sequence and develop recommendations with a handful of compatible partners.

Are Huberman Lab's results guaranteed by Kit?

No. The figures are reported by Kit in its case study and also depend on Huberman Lab's reputation, content and existing audience. They illustrate what the system is capable of without guaranteeing the same outcome for another business.

Is ToolTrim's Kit link an affiliate link?

Yes. ToolTrim may receive a commission if you use this link, at no additional cost to you. This affiliation is clearly disclosed and does not influence the analysis.