Yes! A small, invisible graphic is embedded in the bottom of your HTML email. This tracker, sometimes called an “open tracker” or “web beacon,” is unique to each campaign that you send out.
Anytime someone opens your email, the open-tracker image is downloaded from our server. We monitor when the image has been downloaded and this is how your “opens” are tracked.
Regardless if the email is opened in an email client, browser window, mobile device or on a smartphone, when that image is downloaded it will count as an open and the data can be found on your Reports tab.
Note: There are some situations when we cannot track an opened email.