eMail Manager can file all messages in an Outlook folder and sub-folders to a chosen file system folder using the File Folder command.
Within the File Folder dialog you can choose the target folder and the filename filter. The default filter is as set in settings but this can be overridden.

After each message is saved the option exists to delete the message to the Deleted Items (eMail Manager) folder or the leave the message in its existing folder. If Delete mail after filing is not ticked then the message is not deleted but flagged that it has been filed so eMail Manager knows not to file it again the next time File Folder is used on the folder.
Within the Settings dialog there is an archived and retained category. If this is set the File Folder changes the colour category of the messages not being deleted as they are filed so you can visually see what messages have been process.

Any Outlook colour categories can be used including custom categories.

Filed messaged are then clearing visible within Outlook.

