When you create emails using ActiveCampaign's drag-and-drop editor, or our designers create a unique template for you using custom code, you can track the success of your email marketing campaigns to see how many times they're opened.This is achieved by embedding code in a single pixel of a campaign image, which notifies us when someone opens an email and chooses to display images or clicks a link. Tracking email opens lets you see which headlines and messaging is most likely to get results, so you can continuously refine your campaigns.Note: Open tracking only works with HTML-based emails. It won't track opens from plain text emails or if recipients don't choose to display images, unless they click on a link and you have link tracking enabled.