If you are working on a template and end up exiting the screen without hitting the "Save & Exit" or "Finish" button, or if you sent an email to a contact and forgot to "Save As New Template," you will be able to find your email in the draft section of your email templates!
To access this folder, go to your Email Templates and select + New Email Template
Select "Saved Drafts" in the left hand column.
Older versions of your templates that have been auto-saved or manually saved using the "Save Revision" button will appear here. You can sort the subject, type or last modified columns by ascending or descending order to find the template you need.
To save a template from saved drafts, select the template from your list view and then click the orange "Continue" button. You will be brought into the appropriate email builder and can make any changes or edits necessary. Follow through to the last page to save your draft as a template.