When classifying emails, it is a lengthy process, open the email (1 click), click Classify (+1), choose the workspace(s) (+1), click Classify button (+1), finally click Close (+1) = 5 clicks.
There are 2 things that might make this process quicker:
1. On the classify screen, there is a "Classify" button. You could add a second button "Classify & Return to Inbox" which would reduce it to 4 clicks plus saved time.
2. On the email inbox page, make a "classify" link that opens a list of classifications (the same way it works in create object screens) and Classify button. Allow multiple emails to be selected, select the workspace then click Classify, which would save lots of time and take a minimum of only 3 clicks.
cheers