Substack in 2026: How Creators Grow, Monetise and Influence What People Think About Your Brand

There is a conversation happening about your brand right now. It’s not happening on Instagram or on TikTok, it’s happening in someone's SubStack inbox.

Substack has quietly become the platform where opinions form, audiences gather, and trust is built or broken, away from the noise of social feeds and outside the reach of brand-controlled messaging. Creators are publishing long-form analysis of products, culture, and industry trends to engaged subscribers who actively chose to be there. Real recommendations. Honest takes. Unfiltered opinions landing directly in inboxes every morning. 

For brands still treating Substack as a niche newsletter tool for journalists, 2026 is the year the gap between early movers and everyone else starts to show.

The following guide covers insights for creators; how to grow, monetise, and stand out on Substack. But the commercial opportunity for brands and marketers is woven throughout, because the two things are now inseparable. Understanding how creators build on Substack is the first step to understanding where brand strategy needs to go next.

What Is Substack and Why It Matters in 2026

Substack launched in 2017 as a platform for paid email newsletters. The premise was simple: writers could build a direct relationship with their audience, charge for access, and own the result. No algorithm. No intermediary. No risk of being de-platformed overnight.

That model resonated. Substack now has over 20 million monthly active subscribers and more than five million paid subscriptions on the platform. Writers collectively earn an estimated £337 million a year through subscriptions alone, with the top ten publications generating over £30 million between them annually.

The context matters beyond Substack itself. The global creator economy is valued at approximately £255 billion in 2026, on a trajectory to reach £645 billion by 2030. And brand investment is accelerating to match. U.S. creator economy ad spend is forecast to hit £32.9 billion in 2026, an 18% increase on 2025. Of that figure, spending on direct partnerships beyond social media, the category Substack sits squarely within, is expected to grow by 56%. The money is moving toward owned, trust-based channels and Substack is among the platforms at the top to benefit.

For content creators, Substack represents something that has become increasingly rare: ownership. Your list is yours, your revenue is yours, and your relationship with your audience does not depend on a platform deciding whether today is your day in the algorithm.

For brands and agencies, it represents something else entirely. A direct line into the spaces where educated, engaged audiences are forming their most considered opinions. This is where building for business starts to make real commercial sense.

How Substack Is Shaping the Creator Economy

Substack is no longer just a newsletter platform. It now supports written posts, audio, video, live sessions, community discussion threads, and a short-form notes feature that functions similarly to a social feed. The platform recently launched a TV app and expanded its short-form video capabilities, moving further into territory occupied by YouTube and podcast platforms.

The result is a creator-owned media model. One publication that can house every format, every revenue stream, and every audience touchpoint, without surrendering control to a third-party feed. For creators building long-term media businesses, that breadth is the point.

Why Substack Is Becoming the Creator Platform of Choice

The shift toward Substack reflects a broader move away from platform dependency. After years of algorithm changes, reach suppression, and the commoditisation of social content, creators are increasingly prioritising channels they own over channels (and audiences) they rent.

Substack offers direct audience ownership through email. No intermediary can reduce your reach once someone subscribes. Revenue comes from subscriptions rather than ad rates or brand deal dependency. Long-form content thrives here in a way it cannot on platforms optimised for scroll speed. And the freedom from social algorithms means consistency and quality compound over time, rather than competing for attention in a feed where yesterday's post is already irrelevant.

Bigger names are taking notice. Creators like Justin Welsh, Jay Clouse, and Dan Koe moved significant portions of their audience to Substack in 2025, bringing their communities with them and accelerating the platform's growth. The ecosystem is maturing fast.

How Creators Can Grow on Substack

Growth on Substack is earned, not hacked. The platform's internal recommendation engine is one route in, but organic discovery has become more competitive as the creator base expands. The publications seeing consistent subscriber growth in 2026 are the ones treating Substack as part of a broader content ecosystem rather than a standalone destination.

Cross-platform promotion is essential. Driving traffic from LinkedIn, Instagram, X, and YouTube into a Substack funnel, rather than hoping readers find you through the platform, is now standard practice among serious creators. Some are adding hundreds of new subscribers monthly through a single well-executed LinkedIn strategy, using social as a discovery channel and Substack as the loyalty destination where deeper relationships are built.

Collaboration accelerates growth in ways that solo publishing cannot. Guest posts, cross-promotion agreements, and co-authored projects introduce each creator's publication to the other's audience. Substack's native recommendation feature formalises this to some extent, but the most effective collaborations are still handled directly between creators with genuine audience alignment.

Consistency is the baseline. Substack rewards publishing cadence, not because the algorithm punishes infrequency, but because subscribers who see your name in their inbox regularly are more likely to remain subscribers. Irregular publishing erodes the habit that keeps readers coming back.

How Creators Monetise on Substack

The most straightforward monetisation model on Substack is the paid subscription tier. Free content builds the audience; paid content converts the most engaged segment into recurring revenue. Substack takes a 10% platform fee on paid subscriptions, making it one of the more creator-favourable arrangements in digital publishing.

Beyond subscriptions, Substack newsletters are increasingly a sponsorship vehicle. Substack launched a formal sponsorship beta programme in late 2025, pairing creators with brand partners in a model that keeps editorial control entirely with the writer. It is opt-in, creator-led, and deliberately positioned away from programmatic advertising. For creators, it adds a direct revenue stream without requiring off-platform deal-making. For brands, it represents access to high-intent audiences through editorially coherent placements, something performance channels simply cannot replicate.

The commercial case is already proving itself. When skincare brand Medik8 partnered with Emily Sundberg's Feed Me Substack, it recorded a 204% return on ad spend, a result driven entirely by the trust Sundberg had built with her audience, not by targeting mechanics or paid amplification.

Affiliate marketing is another significant monetisation layer. Substack newsletters are second only to Instagram Stories as a driver of affiliate product sales on platforms like ShopMy, a reflection of the trust readers place in long-form creator recommendations compared to a quick social post.

Digital products, paid events, live sessions, and tiered membership models round out the toolkit. The creators building sustainable Substack businesses are rarely relying on a single revenue stream. The ones treating paid access more like a membership, with exclusive content, community access, and direct engagement, are consistently outperforming those who offer subscriptions as a paywall on more of the same.

How to Stand Out on Substack

The platform is growing fast and the competition for inbox space is real. Standing out in 2026 requires more than good writing. It requires a clearly defined point of view, a consistent voice, and a reason for readers to pay attention beyond the content itself.

One metric that helps explain why: Substack newsletters average open rates of between 40% and 60%, significantly higher than the 21.5% industry average for standard email marketing. Readers on Substack are not passively receiving content. They are actively choosing to engage with it. That attention is the asset.

Niche specificity is the starting point. The publications that break through are not trying to cover everything. They own a particular corner of culture, industry, or perspective and go deep. A broad remit makes positioning harder and differentiation nearly impossible.

Voice matters more than production value. Substack readers chose long-form, they chose to subscribe, and they chose their inbox as the place they receive this content. They are not scrolling past. They are sitting with it. That context demands substance and personality, not polish for its own sake.

Consistent value builds the trust that converts free subscribers to paid. That means showing up reliably, treating subscribers as a community rather than an audience, and creating space for real engagement, comments, replies, live sessions, rather than broadcasting into a void.

The publications compounding fastest on Substack are not necessarily the biggest names. They are the ones with the tightest audience fit, the clearest editorial identity, and the deepest subscriber relationships.

What This Means for Brands

Substack is not a performance channel. But framing it purely through a performance lens misses the point entirely.

Brands like Madewell, Rare Beauty, and The RealReal have launched their own Substack newsletters, treating the platform as an editorial channel, a space to build brand equity through genuine content rather than promotional messaging. Dating app Hinge built a Substack literary series combining real couple stories with a physical book and book club partnerships. Resale platform Vestiaire Collective sponsors posts with creators in fashion and lifestyle. American Eagle launched its own publication, Off The Cuff, co-authored with creator Casey Lewis, moving the brand beyond social feeds into long-form editorial storytelling. 

These are not experiments. They are early signals of a platform shift that is already underway.

The data supports urgency. Substack's US audience nearly doubled between May 2024 and May 2025. There have been over 3 million social and media mentions of Substack in the past year alone, a near 90% increase over the previous period. And yet just 5% of brand marketers and 13% of agency marketers currently use Substack as a creator channel. The early-mover gap is wide open.

The commercial case is straightforward. Substack audiences are engaged, self-selected, and spending active time with content. They are not scrolling. They are reading. A brand placement in the right creator's newsletter reaches a different version of that audience than a paid social impression does. It lands with context, with trust already in place, and with the creator's editorial credibility behind it.

The more sophisticated opportunity is creator partnership, identifying the Substack voices that already have your target audience's trust and building long-form, editorial-first activations that match the platform's expectations. This is not display advertising reskinned. It is influence built on depth.

Influence Marketing Agencies like Disrupt sit at the intersection of those decisions, understanding which creators have built real communities on Substack, how brand partnerships work within the platform's editorial-first framework, and how to build activations that respect that environment rather than disrupt it.

The Future of Substack and How Creators Can Stay Ahead

Substack's trajectory is clear. The platform is investing in multimedia, short-form video, live sessions, podcasts, and a growing TV app, making it viable as a full media platform rather than a single-format newsletter tool. Discovery is improving, with smarter internal recommendations and better cross-platform sharing tools. Monetisation infrastructure is expanding, with the formal sponsorship programme being the clearest signal that Substack is ready to position itself as a proper creator economy player.

For creators, the edge goes to those who treat multimedia as native rather than supplementary. Publications that pair written depth with video and audio are building wider on-platform reach and deeper subscriber loyalty simultaneously.

For brands, the window to engage Substack ahead of mainstream adoption is now. Substack reached unicorn status following a £75 million Series C in July 2025, its valuation reflecting the platform's trajectory rather than its current scale. Where investment goes, audiences and the advertising infrastructure to reach them follow.

The creator economy has a new centre of gravity. Brands that understand that shift early will have the relationships, the presence, and the credibility to compete when it becomes obvious to everyone else.

Working with creators across platforms, including Substack, is what Disrupt does. Ready to get started? Contact us today.

Disrupt is a London-based influencer and creator marketing agency specialising in genuine influence, measurable growth, and creator-first campaigns. Working with brands including Netflix, Vinted, Wizz Air, The FA, and Huel. Part of Tomorrow Group alongside Found, Braidr, and Seed Studio.