A lead magnet is a valuable piece of content or offer provided by a business in exchange for a visitor's contact information, typically their email address. It serves as an incentive to attract potential customers and capture leads. Lead magnets are designed to address a specific pain point or provide a solution to a problem the target audience faces. Common examples include ebooks, whitepapers, templates, webinars, and discount codes. By offering something of value, businesses can build their email list and nurture leads through the sales funnel.