Date Range Options
Date range options are set at the very top of the search window. Once defined, any subsequent query that is built will only consider messages within the specified period:
Use the drop-down list associated with the date range field to select a predefined time period. When a time period is selected, associated sent from / to dates are automatically populated with applicable dates:
Alternatively, select custom range from the list and use calendars associated with the sent from / to fields to enter a more specific time period: