Pop up form – Perhaps the most “in-your-face” option, these types of forms have a high likelihood of conversion. A pop up form appears over your web page and gives more attention to convey the value of your list. Many sign up form creation tools will allow you to customize the length of time at which a pop up form appears on your site (we recommend ~45 seconds, but testing is key).
Finally, you can optionally include “automations” with your broadcast. Automations are a simple way to automatically add or remove tags when your subscribers do certain actions, like open the email or click on specific links. Adding and removing tags are important when creating segments, or subscriber groups, and triggering automated email campaigns.