You can modify your personal preferences under your account settings, while team settings affect all members of the team.
Preferences
The teams preferences are managed by first logging into the Smart Send platform .Navigate to Manage Settings
Go to Settings → Preferences

Automatic tracking emails
Enable automatic tracking emails to notify customers when their shipments are booked. When enabled, customers receive an email containing their tracking number and a link to track their package immediately after booking.
Tracking emails are sent immediately after a shipment is successfully booked with the carrier.
Address book management
Automatically add new receivers to your address book to build a database of customer addresses. This feature is particularly useful when using the manual booking form, as it helps maintain a comprehensive list of shipping destinations.New receivers are automatically added to your address book when shipments are created through any booking method.