The results of the Message Open Summary by Device report come from a tracking pixel embedded in all messages sent through Luminate Online. When a constituent opens an email and displays the images, the pixel records the constituent's OS and device and sends that information back to Luminate Online for reporting.

A description of what is included in the various Device and OS categories (including the "Other" categories) can be found in the Help Documentation.

The "Other" Device and OS categories are also used as a fallback for when the tracking pixel cannot report either the Device or OS accurately. Here are some examples of what may cause a fallback "Other" rating for the Device, OS, or both
  • The constituent does not display images in the message
  • The constituent has enabled browser privacy settings or is running privacy programs
  • Some email clients scrape and re-host all images in messages, including the tracking pixel