Saves an email address as a lead. Use it to catch an address early, such as on a newsletter box or the first step of a survey, before the customer reaches checkout. The lead to save. Email address of the lead. Given name of the lead. Family name of the lead. Your own data to keep with the lead, such as the page it came from. The lead record Subbly saved. ID of the lead. The email address saved. Given name of the lead. Family name of the lead. IP address Subbly saw on the request. Browser Subbly saw on the request. ```js title="Capture a lead" const lead = await subbly.lead.subscribe({ email: 'me@example.com', firstName: 'Ada', metadata: { source: 'footer-form' } }) ```