Start from the question prospects ask you most, then pick the format that answers it fastest: a one-page checklist, a short guide or a simple calculator. Use AI to draft it from your own notes and past answers, check every fact, lay it out in Canva or a document, and deliver it automatically through your email tool's sign-up form.
The usual failure is a generic lead magnet, "10 tips for choosing a cake", that anyone could find in a search, so nobody hands over an email for it. What makes a lead magnet worth having is your specific knowledge: your prices, your lead times, the mistakes your customers make, the questions you answer every week. AI turns that knowledge into a tidy, finished asset in an hour or two. It can't supply the knowledge.
Pick the format from the question people ask
A lead magnet is something useful you give away in exchange for contact details. The right format depends on the kind of question it answers:
| The question sounds like… | Format | Example | Build time with AI |
|---|---|---|---|
| "What do I need to do or remember?" | Checklist (one page) | A florist's wedding flowers checklist | 1-2 hours |
| "How does this work, and what should I choose?" | Short guide (6-10 pages) | A groomer's guide to puppy coat care | 3-5 hours |
| "How much / how many / how big?" | Calculator | A bakery's cake size and price calculator | 2-4 hours including testing |
| "Which one is right for me?" | Quiz | A bike shop's "which service do I need?" | See quiz funnels |
Quizzes work a little differently and have their own method, set out in building a quiz funnel with AI. The other three formats follow below, with the bakery's calculator as the main worked example.
Find the question worth answering in your inbox
Don't guess what people want. Your enquiries already tell you. Copy three months of customer questions from email, social messages and your notes into an assistant:
These are questions customers asked my business over three months.
Group them by the underlying question. For each group give: the count,
three example wordings, and whether a checklist, a short guide or a
calculator would answer it best. Sort by count.The main example is an imagined bakery that makes celebration cakes to order. The top of its results (illustrative):
1. "What size cake do I need for X people, and what will it cost?" 47 questions. Best as a calculator. 2. "How far ahead do I need to order?" 29. Best as a line on every page, not a lead magnet. 3. "Can you do gluten-free, vegan or nut-free?" 22. Best as a short guide with clear caveats. 4. "How do I transport and store the cake?" 14. Best as a checklist.
Number one was an easy choice: asked constantly, answered with arithmetic, and a natural step towards an order. Number two was a reminder that some answers belong on your website, not behind a sign-up form. Hiding basic information to collect emails annoys people.
A checklist in an hour: the florist's wedding flowers list
Checklists are the quickest lead magnet to make and the easiest to get wrong, because AI will happily produce 40 generic items. The trick is to feed it your own experience and ask for fewer, sharper items. An illustrative florist used this prompt with her notes from past weddings:
I'm a florist. Below are my notes on what couples forget or get wrong
when planning wedding flowers. Turn them into a one-page checklist of
12-15 items, grouped by timeline (6+ months, 3 months, 1 month, the week).
Each item: a short action, then a one-line reason from my notes.
Only use points from my notes. Don't add generic wedding advice.A few items from the output, with her edits:
- 6+ months: "Check your venue's rules on candles, petals and fixings. Several venues ban loose petals and open flames." Kept as written.
- 3 months: "Choose flowers that are in season on your date. Peonies in October will cost more and may not be available." She changed "may not be available" to "usually aren't available", which is what she actually tells couples.
- 1 month: "Confirm the final number of buttonholes." Kept, with her own addition: "Count grandparents and ushers; they're the ones people forget."
- The week: "Keep bouquets in water and away from direct sunlight." The AI had written "store in the fridge", which isn't her advice for most flowers. She rewrote it.
That last edit is the important habit. An AI draft is plausible everywhere and wrong in a few places, and only you know which. Laid out in Canva on one page with her logo and a line at the bottom inviting couples to book a consultation, the checklist took 70 minutes from notes to finished PDF. An illustrative bicycle repair shop made the same kind of list, a "ten-minute check before your first ride of spring", and found it doubled as the thing its mechanics handed to customers at the counter.
A short guide people actually finish
Guides fail by being long. Six to ten pages, with a clear promise on the cover, is plenty. An illustrative dog groomer wrote "Your puppy's coat: the first year, month by month" from voice memos she recorded while working, which is often the fastest way to get your knowledge out of your head. The workflow:
- Record 20-30 minutes of voice memos answering the questions customers ask, as if talking to one of them. Transcribe them with your phone or an AI transcription tool.
- Ask for an outline, not a draft: "From this transcript, propose a 7-section outline for a short guide for new puppy owners. One line per section saying what it covers. Use only what's in the transcript."
- Fix the outline before any prose exists. It's far quicker to move sections around in an outline than in a finished draft.
- Draft section by section, pasting the relevant part of the transcript each time, with an instruction to keep your phrases and examples.
- Check facts and health claims. Anything touching health, such as skin conditions, vaccinations or bathing very young puppies, gets checked with a vet or removed.
The groomer's draft included a confident line that "puppies can be bathed from eight weeks". It came from the AI, not her memos. She removed it and wrote "ask your vet when your puppy is ready for a first bath" instead. If you find AI drafts drifting into bland, generic phrasing, why AI marketing copy sounds generic covers the fixes.
A calculator without a developer: the bakery's cake planner
Calculators make excellent lead magnets because they answer a personal question instantly. They're also where AI has changed the most: a chat assistant can write a small working calculator as a single web page, which you can test in your browser and add to your website. The key is to write the logic yourself first, as a table, so the AI builds your rules rather than inventing its own.
The bakery's rules (its own figures, for illustration):
| Cake | Party portions | Dessert portions | Price from |
|---|---|---|---|
| 6-inch round, single tier | 12 | 8 | $45 |
| 8-inch round, single tier | 24 | 14 | $65 |
| 10-inch round, single tier | 38 | 24 | $90 |
| Two tiers, 6 + 8 inch | 36 | 22 | $140 |
| Three tiers, 6 + 8 + 10 inch | 74 | 46 | $260 |
Add-ons: gluten-free sponge +15%, fresh flowers +$25, delivery $12. Lead time: 10 days, or 21 days for three tiers.
The prompt:
Build a simple cake size calculator as ONE self-contained HTML file with
inline CSS and JavaScript, no external libraries.
Inputs: number of guests; portion type (party / dessert); gluten-free
(yes/no); fresh flowers (yes/no); delivery (yes/no); event date.
Logic: the table lists cakes smallest first. Pick the FIRST cake whose
portions for the chosen type are >= guests. If guests exceed the largest cake, say
"Let's talk: call us for larger cakes." Apply add-ons exactly as listed.
Show: recommended cake, portions it serves, price "from $X", and whether
the event date is at least the lead time away; if not, say so kindly.
Table and add-ons: [paste the table and rules above]
Style: clean, readable on a phone, large text. Use my brand colours
[hex codes]. No data is sent anywhere.Then test it properly before anyone else sees it. A small table of test cases catches most problems:
| Test | Expected | First version gave |
|---|---|---|
| 20 guests, party portions | 8-inch, $65 | 8-inch, $65 |
| 24 guests, party portions (exactly on the limit) | 8-inch, $65 | 10-inch, $90 (wrong) |
| 20 guests, dessert, gluten-free | 10-inch, $103.50 | 10-inch, $103.50 |
| 120 guests | "Let's talk" message | Blank result (wrong) |
| Event in 5 days | Lead-time warning | Warning shown |
Two of five tests failed: the calculator used "greater than" instead of "greater than or equal to", and it didn't handle numbers above the largest cake. Both were fixed by pasting the failures back into the chat: "Test 2 should give the 8-inch because 24 portions meets 24 guests. Test 4 shows nothing; it should show the 'Let's talk' message." Run the whole test table again after every fix, because a fix in one place sometimes breaks another.
Most website builders let you add a custom HTML block where the file's code can go; if yours doesn't, the file can be hosted as its own page. Keep the price table in one clearly marked place in the code, so updating prices later is a two-minute job, and re-run the tests whenever you do.
Where does the email come in? Not before the result. The bakery shows the recommendation immediately, then offers: "Want this saved with a checklist for ordering and a reminder 3 weeks before your date? Pop your email in." People who want the reminder are people planning a real event, which makes them far better leads than those who were forced through a form.
The sign-up page and the delivery email
Every lead magnet needs a simple page: what it is, who it's for, a picture of it, and a form with one or two fields. Most email tools can deliver the file automatically when someone signs up:
- Kit (formerly ConvertKit) has a free plan for up to 10,000 subscribers that includes landing pages, forms and automatic delivery of a sign-up incentive; automated email sequences need a paid plan.
- Mailchimp's free plan covers up to 250 contacts and 500 sends a month, with basic automations and forms.
- Your shop or website platform may have its own email tool. AI email marketing tools for small businesses compares the options.
Say plainly what people are signing up for. The bakery's line: "We'll email you the planner and a reminder before your date, plus our monthly cake news. Unsubscribe any time." The delivery email itself should arrive within a minute, repeat the download link in the first line, and ask one question: "What's the occasion?" Replies to that question are some of the warmest leads the bakery gets.
Putting it where the right people will see it
A lead magnet nobody finds collects nothing. Place it where people are already asking the question it answers, rather than on a separate "free resources" page nobody visits. The bakery's placements, roughly in order of how many sign-ups each produced:
- The celebration cakes page, as a box beside the gallery: "Not sure what size you need? Try the cake planner."
- Replies to enquiries. A saved reply for "what size do I need?" now links to the planner, which answers faster than a back-and-forth.
- A counter card with a QR code by the cake display, for people browsing in the shop.
- Social posts showing a real cake with its size and portions: "This two-tier fed 36 at a 40th. Work out yours with the planner, link in bio."
- The email signature of everyone who answers customer mail.
An assistant can draft the promotional copy for each spot from one description of the lead magnet. Ask for "five short versions, each under 25 words, for a website box, a counter card, an Instagram caption, an email signature and a saved reply", then pick and edit. The florist's checklist did best from a single place: a line in her reply to every wedding enquiry, "while you're planning, here's the checklist I give every couple". Placed there, it reached people at exactly the moment they needed it.
What happens after the download
A lead magnet that ends at the download wastes most of its value. Plan three short follow-up emails over about ten days: one that helps them use what they downloaded, one with a relevant example (a photo of a real cake for a similar event, with the customer's permission), and one with a clear next step, such as booking a tasting. Building a welcome email sequence with AI covers writing them.
If the lead magnet is promoted on social media, you can deliver it straight into people's messages instead of through a web page; turning Instagram comments into leads with keyword auto-DMs shows how.
Checks before you publish
- Every fact checked by you. Prices, lead times, portion counts, care advice. Fact-checking AI marketing copy has a method.
- A date on the document, so readers know how current it is.
- Your voice. Read it aloud. Delete anything you wouldn't say to a customer.
- Works on a phone. Most downloads are opened on one. Check the PDF and the calculator on a small screen.
- Links work, including the one to book or order.
- File size under a few megabytes, so it opens quickly on mobile data.
- The delivery email arrives. Sign up yourself with two different email providers and check the spam folders.
Is it bringing in leads?
After a month, look at four numbers. The bakery's cake planner, illustrative figures for its first eight weeks:
| Measure | Result | What it tells you |
|---|---|---|
| People who used the calculator | 610 | The promotion is working |
| Who left an email | 134 (22%) | The offer after the result is appealing |
| Who replied to "What's the occasion?" | 41 | Real events in the pipeline |
| Orders from sign-ups | 19, average $118 | About $2,240 in orders |
If lots of people use a tool but few sign up, the offer after the result isn't strong enough. If plenty sign up but none buy, the follow-up emails need work, or the magnet is attracting people who were never going to order. Retire a lead magnet that brings nothing after three months and try the next question on your list. An illustrative bookshop found its "reading list for reluctant readers" guide brought in steady sign-ups every September when school started and almost none the rest of the year, so it promoted the guide for six weeks each autumn and left it quietly on the website otherwise.
Lead magnets: follow-up questions
Should I make people give an email before they see a calculator's result?
Usually not. Hiding the answer behind a form feels like a trick, and many people leave. Show the result straight away, then offer something extra for an email: a printable version, a detailed quote, or a reminder closer to the date. Fewer people sign up, but those who do actually want to hear from you.
Can I sell or reuse an AI-drafted guide?
Generally yes. OpenAI and Anthropic's terms assign you whatever rights they have in the outputs, though AI-generated text may not be protected by copyright on its own. Your own edits, examples and knowledge are what make the guide yours. Don't paste in other people's copyrighted material to be rewritten, and check anything factual before publishing.
How often should I update a lead magnet?
Whenever a fact in it changes, and at least once a year. Prices, lead times and product ranges date fastest, so put the date on the document and keep the source file editable. A calculator needs checking every time you change prices, which is why keeping its numbers in one clearly labelled table saves grief.
Further reads
- What Is Lead Nurturing and How Can AI Automate It? — What to send new sign-ups over the following weeks.
- How to Segment Your Email List With AI, Even a Small One — Tag sign-ups by which lead magnet they chose.
- How to Plan and Run a Webinar With AI: Script, Slides, Follow-Up — A webinar is the next step up from a downloadable guide.
- How to Create On-Brand Social Media Graphics With AI — Make the lead magnet's graphics and promo posts look like you.
- AI Lead Generation for Small Businesses: What Actually Works — Where lead magnets fit among the lead sources that work.
- How to Build a Brand Voice Guide That AI Can Follow — Keep AI-drafted guides sounding like your business.
- Best AI Lead Generation Tools for Small Businesses (2026) — Ten lead generation tools sorted by the job they do, with verified 2026 prices, a worked example for each, a costed wholesaler stack and a trial scorecard.
- How to Build a Landing Page With AI That Converts — A brief, a section-by-section prompt and a pre-launch checklist for landing pages that turn visitors into enquiries, with a laboratory's page walked through.
- Best AI Landing Page Builders for Small Businesses (2026) — Verified prices, traffic caps and AI features for the landing page builders small businesses actually use, with picks for three different businesses.
- AI Tools and AI Development: The Complete 2026 Guide — the AI hub, including every tutorial in the AI-for-business series.
Sources: Kit pricing page (free plan subscriber limit and opt-in incentive delivery); Mailchimp pricing page (free plan limits); OpenAI and Anthropic terms on output ownership (facts sheet).