Where does the MailMergic Offline app store my files?

Q: Where does the MailMergic Offline app store my files?

Everything stays inside your operating-system user profile. Templates, source files, and fonts live in a File Storage folder under the per-user data directory; the local database and backups sit in a Database folder; transient merge files use the OS temp directory; and finished output goes to a timestamped sub-folder of your Documents folder.

Everything stays inside your operating-system user profile, so you can apply your own encryption, access controls, and deletion:

Templates, source files, and custom fonts live in a File Storage folder under the app's per-user data directory (on Windows %APPDATA%\MailMergic, on macOS ~/Library/Application Support/MailMergic).
The local database and backups sit in a Database folder in the same location.
Transient merge files go to the operating system's temporary directory and are cleaned up afterwards.
Finished output is written to a timestamped sub-folder of your operating system's Documents folder.