What is the difference between letters in Configuration and letters in Mail?
Letters created in Configuration are accessible directly from the student/applicant records. Because these letters are created in export, you can run them in Export for a larger group of records.
Letters created in Mail have designated fields only available in the mailing parameter. These letters are intended to be generated for groups, rather than individual records. For Action Letters, you are able to mark actions as complete and the letter sent when using letters created in Mail.