Once you have configured Letters on Demand and begun using it to send letters and postcards, you'll want to keep track of your sent mail to know when it's been delivered. To track the status of all sent letters and postcards, hover over the left side bar, then select Marketing. Under Marketing, select Letters on Demand.
On the Letters on Demand screen, select "Settings" from the Actions dropdown.
There, you'll see all of the letters and postcards sent from your organization.
Use the filter options on the left side of the screen to find specific letters and review their status. Letters will show as processing when they are first scheduled to be sent. Letters are typically mailed within 2-3 business days from the time a Letters on Demand workflow action takes place.
You will also see sent mail activity when viewing a Contact's activity feed.
There, you'll see when a letter or postcard was sent to a Contact, meaning that the status was set to "Mailed," and when a letter was delivered.