The lead magnet industry has convinced people that a PDF needs forty pages to be worth an email address. The opposite is usually true. A long ebook is expensive to produce, slow to finish and rarely used, which is why so many downloads never turn into subscribers who remember signing up.
The best free resource answers one question completely, in a form the reader can use within the hour.
Pick the question, not the format
Start from the last five questions a buyer asked before they paid. The one that repeats is the lead magnet. It should be specific enough to have a wrong answer: "how to write better emails" is a topic; "the five checks before you press send on a cold campaign" is a resource.
For an email platform, the strongest free resources tend to be:
- a pre-send checklist that prevents a visible mistake
- a worksheet that produces a decision (which segment, which offer, which subject)
- a short teardown template for a landing page or an email
- a calculator or a simple score, if the numbers are stable
A checklist wins because it is used at the moment of need. That moment is when the reader remembers where it came from.
Make it one page
One page forces a decision. If it cannot fit, it is two resources, and you should ship the more useful one first.
A one-pager has: a title that names the outcome, the steps in order, a short note on how to know it worked, and one line about who made it. No foreword, no table of contents, no stock photo of a handshake.
Design matters less than legibility. A clean PDF, a Notion page, a Google Doc with comments off — all fine. What is not fine: a download that requires an account on a second platform, a file that will not open on a phone, or a link that expires.