The Contacts Report (Click Here) is the best place to get a list of contact email addresses. The Contacts Report is in Setting - Reports.
This report allows you to search for contacts relating to specific types of inquiry or bookings/events. Simply select "Inquiry" or "Event" from the dropdown and add one or more conditions (e.g. stage equals xxx, start date greater than 01/01/2xx etc.) to find the contacts you want to email. When you have added your conditions, simply select Run Report. When the list of contacts is displayed, you'll see the green export icon in the top right corner of the contacts list.
The section "Mass Email Using The Contacts Report" in the following article will show you an example: