The best growth channel is other people vouching for you

The short version:

• In B2B, the single biggest driver of which vendors even get considered is word of mouth. In Wynter's 2026 survey of SaaS CMOs it ranked first. Cold outreach and paid ads ranked dead last, at 2%.
• Most buyers now begin inside peer communities, private Slacks, forums, group chats, asking people they trust before they ask Google. You can't buy your way into those rooms. You earn your way in.
• Community, events, and partnerships are three versions of the same move: transferring trust from someone a buyer already believes, to you. For "boring," load-bearing products, that transfer is the whole game.
• The 2026 twist: AI assistants now assemble their recommendations from that same word-of-mouth. Earning real-world trust is increasingly how you get recommended by the machine too.

Every founder knows the category of work nobody is excited about. Payroll, bookkeeping, compliance, security reviews, invoicing tools, etc. These are the load-bearing parts of a company, the ones that cause real damage when they go wrong and earn no applause when they go right. Nobody starts a company because they can't wait to reconcile last month's books.

Selling into that category is a peculiar problem. You aren't offering something people are eager to buy. You're asking to be trusted with something they're afraid to get wrong. And nobody hands that kind of responsibility to a stranger, however good the stranger's ad happens to be.

Which is why, for a whole class of products, the usual growth advice quietly stops working. You can optimize the landing page, buy the keyword, and write the clever cold email, and you'll get attention. What you won't get is trust. Trust doesn't arrive through the channels you control. It arrives through the people your buyer already believes.

The channel you can't buy

There's good data on this now. When Wynter asked more than a hundred B2B SaaS CMOs what gets a vendor into their consideration set in the first place, the top answer by a wide margin was word of mouth. Cold outreach came dead last, ranked first by just 2% of them, and paid ads sat right beside it. About two-thirds said they now begin their search inside peer communities: private Slack groups, forums, invite-only chats, the rooms you can't buy a seat in. And by the time a buyer contacts any vendor directly, 6sense finds most already have a preferred option in mind. 

Read those facts together and the picture is uncomfortable for anyone leaning on outbound. Long before your buyer becomes a lead, they're quietly asking people you'll never see whether you're any good, and the answer was mostly settled by how you treated whoever is already in that room. You don't market your way into that conversation. You earn your way in, or you don't come up at all. 

So here's the reframe that matters: for a trust-based product, growth isn't a function of how many people hear you. It's a function of how many people vouch for you. Being heard is cheap and getting cheaper. Being vouched for is the thing that's scarce. 

Why a vouch can't be manufactured

A recommendation has value precisely because it can't be bought. The moment it can be, it stops being trusted. That's the whole reason peers outrank vendors in every one of these studies. A peer has nothing to sell you, so their opinion carries information a vendor's claims never can. 

This is inconvenient, because it means the highest-leverage growth input is the one you can least directly control. You can't pay for a real vouch. But you can do the two things that produce them: be worth recommending, and be present where recommendations happen. The first is product and service quality. Word of mouth only amplifies whatever is already true, so a great referral engine is mostly just a company that doesn't let people down. The second is a distribution problem, and it has three well-worn solutions. 

Three ways to earn trust at scale

Community, events, and partnerships get filed under different budgets and owned by different teams, but they're the same motion wearing three outfits. Each is a mechanism for transferring trust from someone a buyer already believes, to you.

Community is convening power

The most under-rated position in any market is host. When you're the reason a room exists, the Slack group, the dinner series, the annual gathering, you're no longer one vendor competing for attention inside it. You're the entity that made the valuable thing happen. That earns a standing advertising can't buy. It also compounds in a way most channels don't: each member who gets value brings the next, the conversations become content that persists, and the whole thing grows more credible as it grows larger. And it's defensible. A competitor can copy your features overnight, but they can't copy a community that trusts you. The failure mode is well known: a Slack group that goes silent after a month because it was treated as a broadcast channel rather than a room. Community only works if you keep showing up in it long after it stops feeling like marketing.

Events are the highest-bandwidth version of the same thing

Everything that makes trust hard to build at a distance, reading a person, sensing whether they understand your problem, the small talk that turns a logo into a human, happens almost effortlessly in a room. That's why in-person still outperforms for high-consideration purchases, even in an era when nearly everything else went remote. The mistake is judging an event by the wrong number. The headcount and the photos are vanity. The real value is that a handful of people stopped being names on a screen and became people who'd take your call. And much of the value a good event delivers has nothing to do with you: founders meet other founders wrestling with the same chaos, compare notes, find someone two steps ahead. Being the reason that happened is worth more than any pitch you could have delivered from the stage.

Partnerships are borrowed trust

The fastest way to earn credibility you haven't had time to build is to stand next to someone who already has it. A partner who serves the same people you do, without competing for the same dollar, can lend you their audience and, more valuably, their endorsement. Co-hosting an event with them, showing up inside their ecosystem, becoming the recommended tool in a workflow their customers already rely on: the trust transfer does the selling. This is the logic behind what's now called ecosystem-led or partner-led growth, and the appeal to an early-stage team is obvious. It reaches buyers you could never touch cold, at a lower cost than paid, because the partner's credibility carries you. The honest caveat: it only works if you already have a way to turn a warm introduction into a customer. Hand a partner's referral to a broken funnel and it dies. Partnerships are an accelerant, not a substitute for having your own house in order.

The twist: Trust is how you win the machine now, too

Here's the part that makes this more urgent than it was even two years ago. Buyers increasingly begin not with Google but with an AI assistant. In Wynter's 2026 survey, most CMOs said they now ask a tool like ChatGPT, Claude, or Perplexity to map a category before they ever run a search, and AI recommendations already rank among the top factors in which vendors get considered, ahead of Google research, vendor content, and ads.

But an AI has no opinion of its own. When it recommends a vendor, it's assembling that recommendation from what other people have said: reviews, forum threads, community discussions, the posts your customers wrote without being asked. The machine took over the top of the funnel. It did not take over the trust. People still ask other people whether you're any good. The AI simply reads the record of those conversations and repeats the consensus it finds. 

Which means the offline, relationship-heavy work in this piece is no longer separate from your search and AI visibility. It's an input to it. Every event that gets people talking, every community where your name comes up unprompted, every partner who vouches for you in public adds to the body of evidence an assistant draws on when a founder asks it who to trust with their books. Community, events, and partnerships aren't the old-fashioned alternative to being found online. Increasingly, they're how you get found online.

How to do it without wasting money

None of this is complicated, but it's easy to do badly. A few principles keep it honest: 

• Be worth talking about before you try to get talked about. Word of mouth is a multiplier on reality. If the underlying experience is mediocre, amplifying it just spreads the word faster. 
• Convene, don't only attend. Attending events puts you in the room. Hosting one makes you the reason the room exists. Aim to own a gathering, however small, for the exact people you want as customers. 
• Measure trust honestly. Referrals, "how did you hear about us" answers, repeat mentions in communities, and partner-sourced pipeline are lumpy, lagging, and hard to attribute, and that's fine. Judging an event by its headcount is how good programs get killed for looking unproductive. 
• Partner where audiences overlap and offerings don't. Start with one or two. The best partner meets your buyer at a different point in the same journey.
• Play a longer game than feels comfortable. Some people you meet become customers this quarter. More become customers, or send someone your way, a year later. The compounding is real but slow, which is exactly why so few competitors have the patience for it.

How this looks in practice

We run a version of this at Inkle, where we handle accounting, tax, bookkeeping, and compliance for US startups. It's about as load-bearing and unglamorous as work gets, which is why we lean on trust rather than volume. 

Most of our energy here goes to getting into the same room as the founders we'd want to work with, usually by hosting or co-hosting with partners who serve the same community. Some of the people we meet become customers, some become friends, and some simply remember us and send someone our way later. All of it does something a cold email can't. 

The takeaway

For products that run on trust, which, sooner or later, is most of them, the market's real decision happens in rooms you aren't in and can't buy your way into. You don't win those rooms by being louder. You win them by being worth mentioning, by showing up where the mentioning happens, and by standing next to people who'll vouch for you. Increasingly, even the machine is just repeating what those rooms concluded. The work is slow and hard to measure, which is precisely why it's worth doing: anyone can buy attention, but trust has to be earned, and once earned, it keeps paying out long after the ad budget is gone.

Frequently asked questions

How do you market a boring or "unsexy" product?

Lead with trust, not excitement. For load-bearing products, compliance, payroll, bookkeeping, infrastructure, buyers aren't looking to be wowed. They're looking for someone safe to rely on. That trust is built through word of mouth, community, events, and partner endorsements far more than through ads. Be excellent at the core job, then put yourself where satisfied peers can vouch for you.

Are startup events worth it for early-stage companies? 

For high-trust products, yes, because in-person is the fastest way to build the trust those purchases require, but only if you measure them correctly. The value isn't headcount or photos. It's turning a handful of prospects into people who'd take your call, and giving your buyers something useful (like meeting peers) beyond your pitch. Hosting or co-hosting beats merely attending.

What is community-led growth, and how does it differ from partner-led growth?

Community-led growth (CLG) uses an intentionally built user or founder community to drive discovery, adoption, and advocacy. Ecosystem-led or partner-led growth uses partners, integrations, and co-marketing to reach buyers through networks that already trust them. Both work the same way underneath: they transfer existing trust to you instead of trying to manufacture attention from scratch.

Is word of mouth still relevant now that buyers use AI to find vendors? 

More than ever. Buyers do start with AI to map a category, but AI recommendations are assembled from what real people say about you: reviews, forum threads, community chatter. The tool changed. The trust it repeats did not. Earning word of mouth is now also how you get recommended by AI, which is a core part of GEO (generative engine optimization).

How do you measure the ROI of community, events, and partnerships? 

Imperfectly, and that's expected. Track referrals, self-reported "how did you hear about us" answers, repeat mentions in communities, and partner-sourced pipeline, and accept that these signals are lumpy and lagging. Judging these programs by short-term, last-click metrics is the most common way good ones get cut too early.

Should an early-stage startup focus on ads and outbound, or on trust-building?

Both have a role, but for trust-based categories the evidence favors trust-building: peers drive most vendor consideration, while ads and cold outreach drive very little. Outreach and ads can create awareness. Community, events, and partnerships create the preference that decides the sale. Start the trust work early, because it compounds slowly.