How to Get Your First 100 Users for a SaaS Product

The jump from zero to 100 users is the hardest stretch in a SaaS company's life — harder, in some ways, than 100 to 1,000. You have no audience, no social proof, no word of mouth, and no idea yet which channel will work. The founders who get through it don't have a growth hack; they have a sequence. They do the unscalable things first, find the one channel that responds, and then pour everything into it. Here's the sequence.

How do you get your first 100 users?

Get your first 100 SaaS users in two moves: win the first 10 through direct, unscalable outreach (personal DMs, your network, niche communities), then get the next 90 by doubling down on whichever single channel produced those first 10. Don't spread across five channels — find the one that works for your product and your audience, and go deep before you go wide.

The temptation is to launch everywhere at once. Resist it. Five half-effort channels produce noise; one full-effort channel produces a signal you can actually learn from and scale.

The sequence, phase by phase

Users 0–10: Direct outreach (do things that don't scale)

Your first handful of users come from people you can reach personally. This is slow, manual, and uncomfortable — and it's non-negotiable. Message people one by one, watch them use the product, and learn from every interaction. We cover this window in depth in the first 90 days after launch; the short version is that founder-led outreach is how every SaaS starts, whether founders admit it or not.

Crucially, track where each of these 10 came from. That data is the whole point of this phase. The channel that produced your first few users is your strongest lead for the next 90.

Users 10–50: Double down on your one channel

By now a pattern has emerged — maybe three users came from one subreddit, or a LinkedIn post outperformed everything else. That's your channel. Spend the next stretch going deep on it: post consistently, engage genuinely, become a known name in that specific place. Resist adding a second channel until this one is clearly working or clearly tapped out.

Users 50–100: Add a second channel and build referral loops

Once your first channel is producing reliably, layer in a second — ideally one that compounds, like content/SEO or partnerships. And start engineering word of mouth: ask every happy user for one introduction, add a simple referral incentive, make sharing easy. At 100 users, referrals should be starting to carry some of the load.

Channels that work for SaaS in 2026

| Channel | Best for | Speed | |---|---|---| | Niche communities (Reddit, Discord, Slack, IndieHackers) | Almost every early SaaS | Fast | | Founder-led content (LinkedIn, X) | B2B with a credible founder voice | Medium | | SEO / comparison pages | Products people actively search for | Slow, compounds | | Partnerships / integrations | Products that plug into a bigger platform | Medium | | Launch platforms (Product Hunt) | A one-off spike, not a channel | One-time | | Cold outbound | Defined B2B ICP with clear pain | Medium |

A warning on launch platforms: a Product Hunt launch is a spike, not a channel. It can get you a burst of signups and some feedback, but you can't launch there every week. Treat it as a single event, not a strategy — and only fire it once your product is genuinely ready.

SEO belongs on this list but won't help in your first 100 — it's a 6–12 month play. Plant it now and harvest it later; see SEO for SaaS for how.

The channel-fit test

How do you know a channel is working versus just busy? Three questions:

1. Does it produce signups you didn't have to chase individually?
2. Can you do more of it without proportionally more effort? (Posting is repeatable; bespoke partnerships often aren't.)
3. Are the users it brings any good — do they activate and stick, or bounce?

A channel that passes all three is worth going all-in on. One that fails the third — lots of signups, no retention — is a vanity trap. Quality of user matters more than quantity at this stage, because you're still learning who your product is for. Pricing plays into this too: the right price filters for serious users from day one — see how to price your SaaS.

What to ignore until after 100

| Tempting to do | Why to wait | |---|---| | Paid ads | Expensive way to learn what you can learn free from communities | | Hiring a growth marketer | You don't yet know what growth works | | Five channels at once | Spreads effort too thin to read any signal | | A big rebrand or redesign | Polish doesn't fix a distribution problem | | Influencer deals | Hard to measure, rarely converts pre-PMF |

The bottom line

Get your first 10 users through unscalable, direct outreach — and track where they come from. Then find the single channel that produced them and go deep before going wide. Add a second channel and referral loops only once the first is reliably working. Ignore paid ads, mass channels, and redesigns until you're well past 100.

The first 100 users aren't a marketing problem — they're a focus problem. The founders who make it pick one channel, do the unglamorous work, and let the data tell them where to push next.

Still building toward launch? Book a free scoping call — fixed-price MVPs from £15K, shipped in 8 weeks. And once you've got traction, find out whether your SaaS is ready to raise.