How big should my Kickstarter email list be? Real numbers

Most first-time founders launch with about 100 emails on their list and expect to raise £30,000. Then they raise £2,500, blame the algorithm, and quietly stop replying to their friends. It’s the single most common way a Kickstarter dies before it starts.

So let’s talk kickstarter pre-launch email list size honestly. Not the “1,000 emails equals £30k” bumper-sticker version. The real one, with the maths, the caveats, and the bit nobody wants to admit about list quality. I’m an official Kickstarter Expert Partner and I’ve watched enough campaigns win and lose on this exact number to have opinions.

The formula everyone quotes (and why it’s only half right)

Here’s the shorthand every consultant repeats: 1,000 emails equals roughly £30,000 raised. Also known as “the goal times 50” rule, because 1,000 leads at a £150 average pledge and a 20 percent conversion rate happens to land at £30k.

It’s a fine sanity check. It’s also wildly oversimplified.

The actual formula is:

Raise = List size × Launch-day conversion rate × Average pledge value

Each of those three numbers moves independently. Change any one and the answer moves by a factor. The mistake founders make is treating list size as the only lever, when it’s actually the easiest one to look impressive on and the least predictive of what happens on launch day.

What’s a realistic conversion rate?

This is where most guru maths falls apart.

Every crowdfunding agency’s pitch deck includes a slide claiming their clients convert 20 to 30 percent of email signups on launch day. Some claim higher. It’s mostly marketing. They’re either measuring “opened the email” as a conversion, or they’re quoting one outlier campaign, or they’ve quietly redefined “list” to mean “the top decile of most-engaged VIPs”.

For a normally-built email list, from real Meta ads to a landing page, an honest conversion rate on launch day is 5 to 15 percent. Ten percent is a fair working baseline. If you hit 15, you’ve done well. If you hit 20, you’ve probably got a small hot list rather than a big cold one, and you should be honest with yourself about which.

Plug that into the formula and it looks less rosy. 1,000 emails at 10 percent conversion and a £120 average pledge is £12,000, not £30,000. To hit £30,000 you either need 2,500 emails, a much higher average pledge, or a conversion rate you can’t reliably promise.

Rough working ranges by goal

Nobody wants a range. Everyone wants a single number. Fine, here are the ranges I actually work with when I’m doing raise projections on the Kickstarter pricing calculator. Use them as sanity checks, not gospel.

• £10,000 raise: 500 to 1,500 emails, depending on average pledge and category
• £30,000 raise: 1,500 to 4,000 emails
• £100,000 raise: 5,000 to 12,000 emails, plus a real press and creator strategy
• £250,000 raise: 12,000 to 25,000 emails, plus paid promotion during the campaign, plus a category where six-figure raises are normal (tech, design, board games)

Notice the ranges get wider as the goal gets bigger. That’s not vagueness. That’s because at £100k+ your list is one of three or four levers doing serious work, not the only one. Press hits, creator partnerships, mid-campaign ads and Kickstarter’s own algorithm all contribute in ways that make list-only maths useless at that scale.

Quality beats quantity, and it’s not close

Here’s the bit that annoys the “just get more emails” crowd.

A 500-person list built from targeted Meta ads to a proper landing page, warmed for six weeks with real content, will comfortably outperform a 5,000-person list bought from an email-list agency. Not by a little. By an order of magnitude.

I’ve seen campaigns launch with 6,000 emails and raise £8,000. I’ve seen campaigns launch with 800 emails and raise £45,000. The difference every single time was list quality: whether the person who signed up actually wanted the product, remembered signing up, and was still opening the sender’s emails four weeks later.

Signals of a quality list:

• Signed up via a landing page that clearly described the product
• Opened at least one email in the last 30 days
• Came from an ad or organic source targeting your actual buyer, not a lookalike-of-a-lookalike
• Was captured in the last 90 days (older leads decay fast)
• Isn’t full of .icu and .tk domains

Signals of a rubbish list:

• Bought or “provided” by a lead-gen agency
• Sourced from a giveaway where the prize wasn’t the product
• Untouched for four months
• Sitting in ConvertKit with an open rate under 15 percent

If your list is mostly the second kind, the size number is a fantasy. Cut it in half in your projections, or ignore it entirely.

Not sure whether your list is a real one or a vanity one? A £60 strategy call is the quickest way to get a sober second opinion before you set a goal you’ll regret.

Social followers are not an email list. Waiting lists are not an email list either

This trips up more founders than I’d expect.

Social followers (Instagram, TikTok, X) convert at a fraction of the rate of an email list. A 50,000-follower TikTok might send you 200 email signups on launch day announcement. It’s a nice-to-have, not a substitute.

Kickstarter “notify me” followers on your pre-launch page are worth more than social but less than an email you can send anywhere. Kickstarter’s own data suggests these convert well on launch day, but you can’t retarget them, warm them up with content, or export the list. Treat them as a bonus on top of your real list, not as the list itself.

Actual email list is people who typed their address into a form you own, on a domain you own, that you can email through your own sender at any time. That’s the number that matters.

If your “list” is 10,000 Instagram followers and 40 emails, you have 40 emails.

How long it takes to actually build one

Assuming you’re not sitting on an existing audience, building a proper 1,000 to 2,000-email pre-launch list takes eight to sixteen weeks of consistent Meta ads or organic content. That’s the realistic range for UK founders in a normal category in 2026.

The maths: at a UK hardware cost-per-lead of £2 to £4, 1,000 emails costs £2,000 to £4,000 in ads alone, plus creative, plus landing page. Some categories (board games, design objects with strong photography) can beat that. Some (B2B tools, complex tech) can be double.

Founders who tell me they’ll “just do organic” almost always underdeliver. Organic can absolutely work, but it takes twice as long and you need genuinely good content, not just posting into the void. If you’re mostly relying on organic, add four weeks to your timeline and lower your expectations for launch-day list size.

Email-list agencies: read this before you send anyone money

There’s a small industry of agencies who promise to build your Kickstarter pre-launch list for a flat fee. Some charge per lead. Some run “collaborative giveaways” where you share the entrants with twenty other campaigns.

Most of them are, to put it politely, not great. The leads are low-intent, often not exclusive to you, and convert on launch day at closer to 1 percent than 10. I’ve written more about this pattern on the Kickstarter agency reviews page, which is where I put the honest takes I don’t want to bury in blog posts.

Rules of thumb before you buy an email list:

1. If they can’t tell you exactly where the leads came from, don’t buy.
2. If the leads are shared with other campaigns in your category, halve the value.
3. If they guarantee a conversion rate, walk away. Nobody can guarantee that.
4. If they charge a percentage of your raise, walk faster.

Building a list yourself with £2,000 of Meta ads will beat a £5,000 “done for you” list nine times out of ten. I’ve watched founders learn this the expensive way too many times.

What to do if you’re eight weeks out and the list is tiny

This is the situation half of first-time founders find themselves in. You planned for a June launch. It’s April. You have 87 emails. Now what.

Three honest options:

Option 1: push the launch back. Give yourself another eight to twelve weeks, run Meta ads at £30 to £80 a day, and get to a list size that matches the goal. This is what I recommend most of the time. Nobody remembers the campaign that launched a month later. Everyone remembers the one that flopped.

Option 2: lower the goal. Reset your funding goal to a number your current list can realistically hit. £5,000 goals raise £15,000 all the time. £30,000 goals that flop at £4,000 destroy trust and momentum. Use the Kickstarter pricing calculator to reverse-engineer a goal from your realistic list, not the other way around.

Option 3: raise your average pledge instead. If the list won’t grow fast enough, restructure your reward tiers so the top ones are irresistible. A £250 tier that converts at 15 percent moves more money than a £75 tier that converts at 30. This is the underrated lever.

The fourth option, launching anyway and hoping, is why a lot of Kickstarter campaigns you scroll past never crack £5k. If you’re not sure whether you’re ready to launch at all, the Should I Kickstart quiz is a decent five-minute sanity check.

The bit that actually moves list conversion

If I had to pick the single biggest lever on launch-day conversion (and I do, roughly weekly), it wouldn’t be list size. It’d be the launch video.

A good pitch video does 60 to 70 percent of the selling. It converts more of your list than any email sequence, warms up your paid ads, and pulls in Kickstarter’s own audience once you’re live. Founders with a proper video routinely convert 12 to 18 percent of their list on launch day. Founders with a phone-shot placeholder are lucky to hit 5.

If you’re going to invest in one thing beyond list-building, it should be that. My £3,000 Kickstarter video service is the option most of my clients pick, but you can absolutely DIY a decent one for a fifth of that with the right kit. Whichever route, don’t skip it.

Want a hand with yours?

If you’re trying to work out whether your current list is big enough, or whether your goal needs adjusting, that’s exactly what my £60 strategy call is for. Bring your current list size, your goal, your average pledge and your open rate, and we’ll model out a realistic raise in half an hour.

If you know you need more than a call, the £5,000 done-for-you package covers list-building, ad management, video, and the campaign page in one bundle. And if the video is the piece you’re missing, the £3,000 video build is the highest-leverage thing you can commission before you launch.

The list matters. Just not as much as founders think. And a lot less than the people selling you lists want you to think.