Plugins: WordPress has an easy-to-use plugin to create simple quick banners and notifications. This is a good option if you want to show small updates or mini-offers to people who visit your site.   Third-party platforms: Platforms like OptinMonster are great for the companies wanting to dive in headfirst into a full opt-in strategy. These platforms offer custom design, tracking, timing, integrations, lead generation, testing... the options are endless.