You can view your return envelope tracking events by doing the following:
- Log into your dashboard
- Filter to return envelope tracking events via API Requests > Event Logs tab in the left nav
- Select the tracking event of interest for return envelopes
- Click on "Filters" at the left top
- Select “Letters” under Resources dropdown
- Select the event types you'd like to view (starts with letter.return_envelope) and hit "Apply"
- Select a return envelope tracking event to reveal more details about associated mail piece