Sure! You can go into the folder containing your archive and re-name the existing one. Make sure you have closed the archive folder in outlook first. Right-click it on your folder list and choose “close folder” . Then close Outlook, otherwise when you try to re-name the archive file it will tell you it is in use by another program. After you re-name the file the next time outlook archives it will create a new one. The only draw-back is when you open both archived files on your folder list they will both show under a name of “archive” so it gets tricky keeping track of which archive folder is which. Once you have a new archive folder you can open both and move mail from the larger one to the smaller one if you wish by dragging and dropping.