What's the first marketing channel a new SaaS should pick?

From the SoleOS answers series — written about our own product space; grounded in published definitions and documented behavior, never invented numbers.

Pick the one channel where your ideal customer already spends time and where your own strengths give you a real edge, then commit to it for 60-90 days before you judge it. Don't split thin effort across five channels at once — that's how you end up with weak signal everywhere and proof nowhere. The right first channel is rarely the trendiest one; it's the one you'll actually keep showing up for when it isn't working yet.

Why one channel, not five

Every new SaaS founder wants to hedge: a bit of SEO, a Twitter account, some cold emails, maybe a Product Hunt launch. The problem isn't that any of these are bad ideas — each one needs real depth before it produces a signal you can trust. Ten cold emails a week tells you nothing about whether outreach works for you; two blog posts a month tells you nothing about SEO. Spreading effort thin doesn't reduce risk, it delays the point where you have enough data to decide.

Pick one. Put roughly 80% of your marketing time into it. Let the other channels exist only as passive background (a Twitter account you post to occasionally, a directory listing you submit once) — not as a second full commitment.

Where does your ICP actually gather

Before picking a tactic, answer a narrower question: where does the specific person you're selling to already spend time trying to solve this problem? Not "where do SaaS founders hang out" in general — where does your buyer go when they have this pain, today, before they've heard of you.

If your ICP googles specific error messages or workflow questions, that's a search-intent signal and content/SEO fits. If they're active in a handful of Slack or Discord communities, subreddits, or Twitter/X circles built around this problem, community presence fits. If your ICP is a small, nameable list of companies or job titles, cold outreach fits. If it overlaps heavily with a builder audience that follows progress in public, build-in-public fits.

You can usually answer this without a survey: think about how you found the last few tools you paid for. Your buyer probably behaves similarly.

The main options and their trade-offs

SEO and content. Slow to start — expect little organic traffic for the first few months — but it compounds. An article written today keeps bringing visitors a year from now, and it's the one channel that gets cheaper over time instead of more expensive. It rewards founders who can write specific, useful things about a narrow problem, not generic "10 tips" posts. If you go this route, see how to get recommended in AI search for how discovery is shifting toward AI answers rather than a results page.

Communities. Forums, Slack groups, subreddits, and Discord servers where your buyer already asks for help. Trust builds slowly — you have to show up as a genuine participant before mentioning what you're building, since moderators rightly remove anything that reads as an ad. But once you're a known, helpful presence, recommendations from inside the community convert far better than an ad ever will. This fits founders who already belong to the community, not founders trying to break into one cold.

Cold outreach. Email or DMs to a defined list of prospects. It's the fastest way to get direct signal — you'll know within days whether your pitch lands, not months. It's also the most labor-intensive per customer and doesn't scale: doubling revenue through outreach means roughly doubling the outreach. It's strong when your ICP is narrow and nameable (a specific job title at a specific kind of company) and weak when your ICP is broad and undifferentiated.

Build-in-public / social. Sharing progress, decisions, and numbers as you build. It compounds attention the way SEO compounds search traffic — each post adds to an audience that remembers you, rather than a one-off blast. It suits founders comfortable being visible and consistent, and it's slow the same way communities are: you're building trust with an audience before selling to them.

Paid ads. Usually the wrong first channel for a bootstrapped SaaS, for one structural reason: it stops the moment you stop paying. Early on you don't know your numbers well enough to spend confidently — you likely lack a stable read on conversion rate, retention, or lifetime value, so you can't tell if a given CAC is cheap or ruinous. Paid ads are a channel to add after you've validated a cheaper one and understand your unit economics, not a way to discover them.

Choose based on your strengths, not the leaderboard

The "best" channel is the one that matches two things you can assess about yourself: what you're good at, and where your buyer already is. A founder who writes clearly and doesn't mind waiting should lean SEO. A natural connector already active in the right community should lean on that community. A founder comfortable cold-emailing with a short, nameable prospect list should do outreach. A founder who enjoys narrating their build should go build-in-public.

Don't pick a channel because it's trendy, or because a well-known founder's story used it — their audience and strengths aren't yours. If you're chasing your first customers, the fastest path there matters more than the "correct" channel in the abstract; see how to get your first $100 in MRR for how that maps to a concrete plan.

Give it 60-90 days before you judge it

Every channel above has a startup cost before it produces anything measurable. SEO needs time to get indexed and ranked. Communities need time before people trust you enough to click your link. Cold outreach needs several list-and-message iterations before your reply rate stabilizes. Build-in-public needs a runway of posts before anyone's paying attention.

Set a 60-90 day window at the start, write down what you expect to see by the end of it, and don't switch before that window closes unless you find a structural reason it can't work (your ICP genuinely isn't in the community you picked, say). Switching every three weeks because nothing's happened yet is the most common way solo founders waste a year of effort without ever getting real data on any one channel.

How to tell if a channel is working

Revenue is a lagging indicator — by the time it moves, you've already spent the 60-90 days. Watch leading signals instead:

• SEO/content: pages getting indexed, impressions and clicks in Search Console rising week over week, time-on-page and scroll depth on your content.
• Communities: your posts/replies getting upvotes or genuine replies (not just views), direct messages asking about your product, being tagged by others when the topic comes up.
• Cold outreach: reply rate, meeting-booked rate, and how many replies are substantive versus a flat "not interested."
• Build-in-public: follower growth net of unfollows, replies and quote-posts (not just likes), inbound DMs from people who found you through a post.
• Paid ads (once you're ready for them): click-through rate and cost per signup, tracked against trial-to-paid conversion, not just cost per click.

The common thread: track engagement and intent signals weekly, not just the bank balance monthly. Wire up analytics before day one so you have a clean before/after — how a solo founder should track analytics covers the minimum setup.

This guide is published by SoleOS, which brings metrics like these — search performance, engagement, signups, revenue — into one dashboard for founders running more than one product. If you run a single product and can check Stripe, PostHog, and Search Console directly without losing track, you don't need a unifying dashboard for this decision — a spreadsheet and a weekly 20-minute review of the signals above will tell you the same thing.

Frequently asked questions

What if I don't know where my ICP gathers yet?

Look at how you (or people like your buyer) found the last few tools you paid for — that's usually a reliable proxy. If you truly can't guess, spend one week asking every new signup "how did you hear about this?" before committing to a channel; five honest answers beat a guess.

Can I run two channels at once if I have the time?

You can run a second channel passively (an occasional post, a directory listing) without it competing for your primary attention. Running two channels at full effort usually means neither gets the depth needed to produce a real signal within 60-90 days.

What if 90 days pass and nothing happened?

Check whether you actually executed consistently — most "failed" channels were under-resourced, not wrong. If you did show up consistently and there's genuinely no leading signal, that's real information: move to your second-choice channel, but keep whatever content or connections you built, since little of it is wasted.

Is build-in-public the same as content marketing?

They overlap but aren't identical. Content/SEO targets search intent around a problem and is largely evergreen. Build-in-public targets an audience that follows you as a person over time and is more real-time and personality-driven. A founder can do either, or a light version of both, but each needs its own consistency.

When should I add paid ads?

Once you have a validated channel, a stable read on trial-to-paid conversion, and a rough sense of what a customer is worth to you. At that point ads amplify a working funnel instead of masking an unproven one.