You can export all your drills by Touching -
Tools > Export Drills
This will bring up a mail scene as shown in Green Splat 1. You enter a valid email address and press Send. Your mail app must be properly configured to send outgoing emails or it will complain and not send the file.
If you Touch the Cancel button you will see a scene shown in Green Splat 2. It is typical to choose "Delete Draft" to remove it from the Drafts mail folder.