The email open rate metric is mostly used by people who send email newsletters. It measures how many people have opened a newsletter.
Years ago you could embed links and pictures into an email and measure the web site hits to track who and how many people opened your newsletter.
In recent years to help protect users from spam mail programs such as Microsoft Outlook block displaying the pictures by default. Several free webmail providers also block images from unknown senders too.
Years ago you could embed links and pictures into an email and measure the web site hits to track who and how many people opened your newsletter.
In recent years to help protect users from spam mail programs such as Microsoft Outlook block displaying the pictures by default. Several free webmail providers also block images from unknown senders too.