You can view the Incoming Delivery Queue at the Domain Level.
1. Click on Continuity > Delivery queue - incoming to open the Incoming Log Search page filtered to show all messages with the 'Queued' and 'Delivery failed' status. You can further filter your listed results by adding new rules using the + New rule link.
2. After adding more rules, click Show Results to run the search and list the results
All queued emails which match the filters are listed in the table at the bottom of the page.
In the Search Results listed you can carry out a variety of actions. These differ depending on the status of the message, and include but are not limited to: