Even before a mailer is sent, you can preview the projected delivery date on the "Send Mailer" button available in any Lead Details view.
Here's how to track mailers that have been sent:
After logging into your profile on Leadscoutapp.com, follow these steps:
Click "Leads" on the menu in the top left
Click the lead in the list to open up the Lead Detail view
You can view the current mailer status under the "Targeting" section.
Tap the marker on the map or in the My Leads screen to open the address card.
Tap "Send Mail"
You can view the current mailer status on this screen