A small addon I hacked together in a couple hours so I won't loose my precious customer appreciation mail collection.
Likely incompatible with many other mail addons, but at least the data will be stored for now.
To archive a mail, simply open it in the mail menu and press the keybind "Archive Mail" shown on the bottom.
Mails that still have their attachments will also store which items are attached. They won't show for now, but maybe one day in the future I'll add something for that.
Depends on
LibDebugLogger.