If you need your clients email addresses from Coconut Calendar in order to make a mass mailing, you can use Reports feature.
1. Go to Reports page:
2. Navigate to Clients > Contact Information:
3. Make sure you selected all necessary fields, including Email. Click Export Report:
4. Now you downloaded a .csv file. Open it, select all desired email addresses from Email column and copy them:
5. Finally, simply paste this selection when composing an email into the 'To:' field.