To see which contacts are engaged/not engaged with your communications, we recommend using the two-part Engagement Tagging automation recipe located within the “Create a New Automation” modal under "Manage & Track Contacts."
Once these automations are implemented in your account, they will only consider engagement moving forward. They cannot determine engagement for previously sent campaigns. We recommend documenting the date that these automations are activated in your account; this will give you a frame of reference as to when the non-engagement tags are applied to your contacts.
Note: It is not possible to locate contacts who have not opened or interacted with your previously sent campaigns within a specific timeframe. You can only search for contacts who have not opened specific campaigns by doing an advanced search or by viewing the non-opens in your campaign reports.
If you wish to delete contacts who have not engaged with your previously sent campaigns, we recommend using our Engagement Management tool.