How are engagement metrics defined?
In Email Analytics, Litmus shows you how long your subscribers were engaged with your message. This is sometimes also known as the read rate. Since we're measuring how long the recipient had the email open, we report this back in three categories: Read, Skim Read and Glanced/Deleted.
Read: 10 or more seconds
Skimmed: 2 or more seconds, but less than 10 seconds
Glanced/Deleted: less than 2 seconds
We also compare your engagement stats to the "average" engagement data for all campaigns run through Litmus in your engagement report for your campaign.