A lot depends upon your system. I personally avoid the use of folders for email because it means that I have to have a separate system that is parallel to the filing system for my other information. Maintaining such a system is, IMO, very difficult.Originally Posted by Luca
I use folders in my electronic organizer where I usually file my emails along with all of all my other relevant information. That way its all together. Many, many organizers sync with Outlook, now, so getting emails in is no problem. For those that don't sync, Outlook Linker (freeware) allows you to set up hyperlinks to emails from almost any modern organizer in a snap.
Given the above, I usually add keywords to my emails instead of mainaining email folders. That way I have the option of using a search protocol or the organizer to find them.