You can build an email list for email marketing by offering value to your audience. You should create a lead magnet like a free guide, checklist, or discount. A good lead magnet attracts people to join your list. You must set up a signup form on your website. A clear and simple form works best. You need to choose an email marketing platform like Mailchimp or ConvertKit. You should promote your lead magnet on social media and blogs. Regular engagement with your subscribers keeps them active. You must always provide useful content. A good email list helps grow your business effectively.