To set up your tagging:

You will need to do the following:

> Click admin
> Manage Email
> Click on the tab at the top 'Tagging Email'
> Select the user you wish this to be turned on for.
> Tick the Tag email box against each of the folder you wish Arithon to tag emails from.

To tag historic emails, you will need to click 'Rescan folder' - which appears to the right of folders that have been ticked.